Reptiles Wiki
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Reptiles are cold-blooded vertebrates with scales instead of hair or feathers that live on every continent except Antarctica. There are four orders of reptiles: crocodiles, alligators and caimans; tuataras; over 7,900 species of lizards and snakes; and around 300 species of turtles, tortoises and terrapins. While most reptiles lay eggs, some lizard and snake species give live birth through egg retention or placental development analogous to mammals.
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Crabs
Crabs live in salt water, fresh water, and on land. They eat small bits of plant and animal material. All crabs reproduce through mating, where the male carries the female on his back for weeks after mating to fertilize her eggs. The female stores the male's sperm and can fertilize multiple batches of eggs with the stored sperm.
Sand fly
Sand flies have a four-stage life-cycle: egg, larva, pupa and adult. Eggs hatch after 4‒20 days, although this is likely to be delayed in cooler weather
The amazing platypus
The platypus lives in eastern Australia in rivers, streams, and logs. It has a duck-like bill, beaver-like tail, and eats small freshwater animals at night such as shrimp, insects, frogs, and fish eggs. The platypus is endangered due to habitat destruction, overhunting for its fur, and pollution of its streams and rivers. Efforts to help the platypus include protection under CITES, education programs, and scientific study.
Life cycle of mud crab
1) Mud crabs undergo a complex life cycle beginning as larvae called zoea, which go through five zoeal stages and one megalopal stage before metamorphosing into juvenile crabs.
2) As juveniles, they migrate to estuaries where they mature over 18-24 months. Mature males and females mate, after which the females migrate offshore to spawn millions of eggs.
3) The eggs hatch into zoea larvae, restarting the cycle, with spawning occurring year-round in the tropics and during late spring to mid-autumn in subtropical and warm temperate areas.
seed production of mud crab
This document summarizes the seed production of mud crabs. It discusses the commercial crab species, their distribution in the Indo-Pacific region, and their reproductive biology. Key points include that males have larger claws than females, mating occurs after the female molts, and females carry fertilized eggs for two weeks before the larvae hatch and go through five zoea stages over 15-20 days before becoming megalopas and then juvenile crabs. The peak breeding seasons vary by region.
Phylum antropoda-zoology
The document summarizes the characteristics of the phylum Arthropoda. It belongs to the animal kingdom and includes spiders, insects, crustaceans and others. Arthropods have jointed legs and segmented bodies. They are the most diverse phylum and live everywhere, including on land, in water and air. They exhibit various modes of nutrition from carnivory to herbivory. Reproduction is usually sexual, and locomotion methods include flying, swimming and crawling. The extinct subphylum Trilobita is also discussed, describing their trilobed body shape and existence as marine scavengers and predators over 500 million years ago.
Fish reproduction
The document summarizes different aspects of fish reproduction, including both asexual and sexual reproduction. It discusses types of hermaphroditism, modes of sexual reproduction such as oviparity and viviparity, clutch sizes, courtship behaviors, sexual dimorphism, and various strategies for protecting eggs and young, such as mouth brooding, external brooding, gill brooding, and nest building. Sexual maturity varies widely between species, from shortly after birth to over 10 years of age depending on size, lifespan, and other factors.
Reproductive biology and life cycle of crabs
Reproductive Biology and Life cycle and larval stage of mud crab describe in simple language and easy to understand
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Crabs
Crabs live in salt water, fresh water, and on land. They eat small bits of plant and animal material. All crabs reproduce through mating, where the male carries the female on his back for weeks after mating to fertilize her eggs. The female stores the male's sperm and can fertilize multiple batches of eggs with the stored sperm.
Sand fly
Sand flies have a four-stage life-cycle: egg, larva, pupa and adult. Eggs hatch after 4‒20 days, although this is likely to be delayed in cooler weather
The amazing platypus
The platypus lives in eastern Australia in rivers, streams, and logs. It has a duck-like bill, beaver-like tail, and eats small freshwater animals at night such as shrimp, insects, frogs, and fish eggs. The platypus is endangered due to habitat destruction, overhunting for its fur, and pollution of its streams and rivers. Efforts to help the platypus include protection under CITES, education programs, and scientific study.
Life cycle of mud crab
1) Mud crabs undergo a complex life cycle beginning as larvae called zoea, which go through five zoeal stages and one megalopal stage before metamorphosing into juvenile crabs.
2) As juveniles, they migrate to estuaries where they mature over 18-24 months. Mature males and females mate, after which the females migrate offshore to spawn millions of eggs.
3) The eggs hatch into zoea larvae, restarting the cycle, with spawning occurring year-round in the tropics and during late spring to mid-autumn in subtropical and warm temperate areas.
seed production of mud crab
This document summarizes the seed production of mud crabs. It discusses the commercial crab species, their distribution in the Indo-Pacific region, and their reproductive biology. Key points include that males have larger claws than females, mating occurs after the female molts, and females carry fertilized eggs for two weeks before the larvae hatch and go through five zoea stages over 15-20 days before becoming megalopas and then juvenile crabs. The peak breeding seasons vary by region.
Phylum antropoda-zoology
The document summarizes the characteristics of the phylum Arthropoda. It belongs to the animal kingdom and includes spiders, insects, crustaceans and others. Arthropods have jointed legs and segmented bodies. They are the most diverse phylum and live everywhere, including on land, in water and air. They exhibit various modes of nutrition from carnivory to herbivory. Reproduction is usually sexual, and locomotion methods include flying, swimming and crawling. The extinct subphylum Trilobita is also discussed, describing their trilobed body shape and existence as marine scavengers and predators over 500 million years ago.
Fish reproduction
The document summarizes different aspects of fish reproduction, including both asexual and sexual reproduction. It discusses types of hermaphroditism, modes of sexual reproduction such as oviparity and viviparity, clutch sizes, courtship behaviors, sexual dimorphism, and various strategies for protecting eggs and young, such as mouth brooding, external brooding, gill brooding, and nest building. Sexual maturity varies widely between species, from shortly after birth to over 10 years of age depending on size, lifespan, and other factors.
Reproductive biology and life cycle of crabs
Reproductive Biology and Life cycle and larval stage of mud crab describe in simple language and easy to understand
Sequential Hermaphrodites
Sequential hermaphroditism occurs in some species where an individual is born one sex and can change sex, usually only once. There are two types: protandry, where organisms are born male and change to female, and protogyny, where organisms are born female and change to male. This phenomenon is found in some fish, like clownfish and wrasses, as well as gastropods like snails, where the gonads contain genetic material for both sexes but only express one at a time.
Kangaroo
Md. ARIF HOSSAIN
Level 4,Semester 1
Faculty of veterinary science
Bangladesh Agricultural University
Ben potter ben's project
- Boa constrictors are large, heavy-bodied snakes that live in rainforests and semi-deserts in Central and South America. They can grow up to 13 feet long.
- They eat small rodents and ambush prey, killing with constriction before swallowing whole. Females give birth to live young in litters of 10-65.
- Boa constrictors help control rodent populations but are threatened by rainforest destruction and hunting. Protecting their habitat and regulating trade can help their long-term survival.
Mosquito
Mosquito bites itch due to an allergic reaction when the mosquito bites and injects saliva. Mosquitoes have a complex life cycle that requires water and includes eggs, larvae, pupae, and adult stages. Only female mosquitoes bite to obtain blood needed for egg production, and there are over 3,500 mosquito species worldwide. The malaria parasite can be transmitted to humans via an infected mosquito bite.
Nematode .......parasites of human and further phylogenetic consideration
Phylum Nematoda
Some important Nematode Parasites of Human
The giant intestinal roundworm of humans
The Human Pinworm
The new World Hookworm
The Porkworm
The Filarial Worm
Further Phylogenetic Considerations
References
Classification and Kingdoms Notes
1. The document discusses the classification of organisms into taxonomic groups like kingdoms, phyla, classes, orders, families, genera and species.
2. It describes the five kingdoms of life - Monera, Protista, Plantae, Animalia, and Fungi.
3. Animals are defined as multicellular, eukaryotic, heterotrophic organisms that lack cell walls. They are classified within the kingdom Animalia.
Cribrinopsis Albopunctata
Cribrinopsis albopunctata is a species of sea anemone that lives along rocky coasts in the North Pacific. It can reproduce both sexually, releasing eggs and sperm into the water where fertilization occurs, and asexually through budding. The sea anemone has a mutualistic relationship with hermit crabs, providing protection and cleaning in exchange for transportation. Its tentacles are capable of stinging and producing harmful effects in humans.
Swan pics
The document describes the mute swan, classified in the kingdom Animalia, phylum Chordata, class Aves, order Anseriformes, family Anatidae, and genus and species Cygnus olor. Key details provided include that mute swans are 25-30 pounds as adults, 56-62 inches in length, native to Europe but brought to North America in the 1800s, eat 8 pounds of aquatic vegetation and seeds per day, and lay eggs with their young called cygnets. The document also lists the scientific names of the black-necked swan, trumpeter swan, and black swan.
Reptiles
Reptiles are found all over the world and are descended from dinosaurs. There are several types of reptiles including snakes, turtles, lizards, crocodiles, and alligators. Reptiles share certain traits such as having backbones, being covered in scales, being cold-blooded, and producing shelled eggs. While often seen as pests, reptiles display important behaviors like seeking heat, finding shelter, making noises, and more. In reality, reptiles are diverse animals that are similar to fish, mammals, and birds in many ways.
characterization of mites
This document contains information about two mite families: Galumnidae and Sarcoptidae. It describes the key characteristics of the water hyacinth mite Orthogalumna terebrantis, including its life cycle and feeding behavior. It also provides details on the parasitic mites in the family Sarcoptidae, which includes mange mites that infect humans and domestic animals like Sarcoptes scabiei. The document outlines the life stages and morphological features of mites in the Sarcoptidae family.
Animal kingdom (bueno)daniela emma eva
This document provides information about different animal kingdoms. It discusses vertebrates like mammals, fish, birds, reptiles and amphibians. It notes that mammals are warm-blooded and feed milk to their young, while birds evolved from theropod dinosaurs. Invertebrates discussed include arthropods like insects, arachnids and myriapods. The document provides 3-4 key facts about each group.
Animal kingdom daniela emma eva
This document provides information about different animal kingdoms, including vertebrates and invertebrates. It discusses key facts about mammals, fish, birds, reptiles, amphibians, arachnids, arthropods, and myriapods. For example, it notes that mammals are warm-blooded and their babies drink milk, while fish have inhabited Earth for over 450 million years. The document also explains characteristics of invertebrate groups such as arthropods, which make up 80% of known animal species.
Matt A Reptiles
This document discusses reptiles, describing that they are cold-blooded with dry scales covering their bodies. It notes that only 21 snake species and one lizard are venomous, and that most bites occur when reptiles are harassed. The document provides examples of different types of reptiles like crocodiles, lizards, snakes, and turtles. It also highlights the Eastern coach whip as the author's favorite reptile, describing how it hunts prey and defends itself, and how it can grow in size.
Case study basf wyandotte
המקרה המובא לפניכם מתאר סיטואציה מוכרת לארגונים רבים:
הצורך לרענן את הארגון במימד של תרבות עבודה, מעורבות עובדים ובחינה מחדש של תהליכים מסורתיים שאולי אינם רלוונטיים היום ופוגעים ברווחיות של הארגון
במצגת לפניכם תמצאו דוגמא למפעל של חברה מובילת שוק שעמד בפני קשיים ממשיים להמשך פעילותו. האפקט שיצר תהליך של יישום מצוינות תפעולית במפעל הביא אותו לפריצת דרך בתוצאות הכספיות ומעבר לצמיחה עקבית לאורך השנים
Alyssa A Mammals
Mammals are warm-blooded animals that give birth to live young and have hair or fur; they defend themselves from threats by running, hiding, camouflaging, or using defenses like musk, spikes, or hooves; and examples of mammals mentioned include tigers, armadillos, bats, carnivores, hoofed mammals, marine mammals, pouched mammals, primates, rabbits, rodents, moles, gibbons, slow lorises, lynx, squirrels, and skunks.
Austin Reptile
Reptiles are cold-blooded animals with over 6,800 species worldwide, most having bodies covered with dry, horny scales. They employ various defense mechanisms like hissing, striking, shedding tails, warning colors, camouflage, or tough skin. Major reptile groups include crocodilians, lizards, snakes, and turtles, such as the loggerhead turtle which can lay up to 500 eggs per year.
Reptiles
Reptiles are cold-blooded vertebrates that breathe using their pulmonary system. They include turtles, tortoises, lizards, snakes, and crocodilians. Reptiles can be carnivorous, herbivorous, or omnivorous. Crocodiles live in both saltwater and freshwater and feed on fish, birds, and invertebrates. Alligators are large aquatic reptiles with scaly skin, four feet, and a sharp-toothed snout. Snakes range greatly in size and habitat but many hibernate in cooler climates.
Classification of animals
This document classifies and describes living things. It divides all living things into two main groups: animals and plants. Animals are further divided into vertebrates and invertebrates. Vertebrates are animals with backbones and include five groups: amphibians, birds, fish, mammals, and reptiles. Invertebrates do not have backbones and include eight groups such as molluscs, flatworms, annelids, and arthropods. Arthropods are further classified into four subgroups: arachnids, centipedes and millipedes, crustaceans, and insects.
Reptile notes: Notes on Class Reptilia and Orders Crocodilia, Testudines, Sq...
Notes on Class Reptilia and Orders Crocodilia, Testudines, Squamata, and Sphenodontia, with visual comparison of venomous snakes in NC
20. Class Reptilia Notes
The document discusses the class Reptilia and its three orders: Testudines (turtles, tortoises and terrapins), Squamata (snakes, lizards, amphibians) and Crocodilia (crocodiles). It notes that reptiles are ectothermic, lay eggs, have scales and breathe air. It provides details on sea turtles, marine iguanas, sea snakes and saltwater crocodiles. It also discusses threats facing some reptile species like habitat loss and overexploitation.
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Sequential Hermaphrodites
Sequential hermaphroditism occurs in some species where an individual is born one sex and can change sex, usually only once. There are two types: protandry, where organisms are born male and change to female, and protogyny, where organisms are born female and change to male. This phenomenon is found in some fish, like clownfish and wrasses, as well as gastropods like snails, where the gonads contain genetic material for both sexes but only express one at a time.
Kangaroo
Md. ARIF HOSSAIN
Level 4,Semester 1
Faculty of veterinary science
Bangladesh Agricultural University
Ben potter ben's project
- Boa constrictors are large, heavy-bodied snakes that live in rainforests and semi-deserts in Central and South America. They can grow up to 13 feet long.
- They eat small rodents and ambush prey, killing with constriction before swallowing whole. Females give birth to live young in litters of 10-65.
- Boa constrictors help control rodent populations but are threatened by rainforest destruction and hunting. Protecting their habitat and regulating trade can help their long-term survival.
Mosquito
Mosquito bites itch due to an allergic reaction when the mosquito bites and injects saliva. Mosquitoes have a complex life cycle that requires water and includes eggs, larvae, pupae, and adult stages. Only female mosquitoes bite to obtain blood needed for egg production, and there are over 3,500 mosquito species worldwide. The malaria parasite can be transmitted to humans via an infected mosquito bite.
Nematode .......parasites of human and further phylogenetic consideration
Phylum Nematoda
Some important Nematode Parasites of Human
The giant intestinal roundworm of humans
The Human Pinworm
The new World Hookworm
The Porkworm
The Filarial Worm
Further Phylogenetic Considerations
References
Classification and Kingdoms Notes
1. The document discusses the classification of organisms into taxonomic groups like kingdoms, phyla, classes, orders, families, genera and species.
2. It describes the five kingdoms of life - Monera, Protista, Plantae, Animalia, and Fungi.
3. Animals are defined as multicellular, eukaryotic, heterotrophic organisms that lack cell walls. They are classified within the kingdom Animalia.
Cribrinopsis Albopunctata
Cribrinopsis albopunctata is a species of sea anemone that lives along rocky coasts in the North Pacific. It can reproduce both sexually, releasing eggs and sperm into the water where fertilization occurs, and asexually through budding. The sea anemone has a mutualistic relationship with hermit crabs, providing protection and cleaning in exchange for transportation. Its tentacles are capable of stinging and producing harmful effects in humans.
Swan pics
The document describes the mute swan, classified in the kingdom Animalia, phylum Chordata, class Aves, order Anseriformes, family Anatidae, and genus and species Cygnus olor. Key details provided include that mute swans are 25-30 pounds as adults, 56-62 inches in length, native to Europe but brought to North America in the 1800s, eat 8 pounds of aquatic vegetation and seeds per day, and lay eggs with their young called cygnets. The document also lists the scientific names of the black-necked swan, trumpeter swan, and black swan.
Reptiles
Reptiles are found all over the world and are descended from dinosaurs. There are several types of reptiles including snakes, turtles, lizards, crocodiles, and alligators. Reptiles share certain traits such as having backbones, being covered in scales, being cold-blooded, and producing shelled eggs. While often seen as pests, reptiles display important behaviors like seeking heat, finding shelter, making noises, and more. In reality, reptiles are diverse animals that are similar to fish, mammals, and birds in many ways.
characterization of mites
This document contains information about two mite families: Galumnidae and Sarcoptidae. It describes the key characteristics of the water hyacinth mite Orthogalumna terebrantis, including its life cycle and feeding behavior. It also provides details on the parasitic mites in the family Sarcoptidae, which includes mange mites that infect humans and domestic animals like Sarcoptes scabiei. The document outlines the life stages and morphological features of mites in the Sarcoptidae family.
Animal kingdom (bueno)daniela emma eva
This document provides information about different animal kingdoms. It discusses vertebrates like mammals, fish, birds, reptiles and amphibians. It notes that mammals are warm-blooded and feed milk to their young, while birds evolved from theropod dinosaurs. Invertebrates discussed include arthropods like insects, arachnids and myriapods. The document provides 3-4 key facts about each group.
Animal kingdom daniela emma eva
This document provides information about different animal kingdoms, including vertebrates and invertebrates. It discusses key facts about mammals, fish, birds, reptiles, amphibians, arachnids, arthropods, and myriapods. For example, it notes that mammals are warm-blooded and their babies drink milk, while fish have inhabited Earth for over 450 million years. The document also explains characteristics of invertebrate groups such as arthropods, which make up 80% of known animal species.
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Nematode .......parasites of human and further phylogenetic consideration
Nematode .......parasites of human and further phylogenetic consideration
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Matt A Reptiles
This document discusses reptiles, describing that they are cold-blooded with dry scales covering their bodies. It notes that only 21 snake species and one lizard are venomous, and that most bites occur when reptiles are harassed. The document provides examples of different types of reptiles like crocodiles, lizards, snakes, and turtles. It also highlights the Eastern coach whip as the author's favorite reptile, describing how it hunts prey and defends itself, and how it can grow in size.
Case study basf wyandotte
המקרה המובא לפניכם מתאר סיטואציה מוכרת לארגונים רבים:
הצורך לרענן את הארגון במימד של תרבות עבודה, מעורבות עובדים ובחינה מחדש של תהליכים מסורתיים שאולי אינם רלוונטיים היום ופוגעים ברווחיות של הארגון
במצגת לפניכם תמצאו דוגמא למפעל של חברה מובילת שוק שעמד בפני קשיים ממשיים להמשך פעילותו. האפקט שיצר תהליך של יישום מצוינות תפעולית במפעל הביא אותו לפריצת דרך בתוצאות הכספיות ומעבר לצמיחה עקבית לאורך השנים
Alyssa A Mammals
Mammals are warm-blooded animals that give birth to live young and have hair or fur; they defend themselves from threats by running, hiding, camouflaging, or using defenses like musk, spikes, or hooves; and examples of mammals mentioned include tigers, armadillos, bats, carnivores, hoofed mammals, marine mammals, pouched mammals, primates, rabbits, rodents, moles, gibbons, slow lorises, lynx, squirrels, and skunks.
Austin Reptile
Reptiles are cold-blooded animals with over 6,800 species worldwide, most having bodies covered with dry, horny scales. They employ various defense mechanisms like hissing, striking, shedding tails, warning colors, camouflage, or tough skin. Major reptile groups include crocodilians, lizards, snakes, and turtles, such as the loggerhead turtle which can lay up to 500 eggs per year.
Reptiles
Reptiles are cold-blooded vertebrates that breathe using their pulmonary system. They include turtles, tortoises, lizards, snakes, and crocodilians. Reptiles can be carnivorous, herbivorous, or omnivorous. Crocodiles live in both saltwater and freshwater and feed on fish, birds, and invertebrates. Alligators are large aquatic reptiles with scaly skin, four feet, and a sharp-toothed snout. Snakes range greatly in size and habitat but many hibernate in cooler climates.
Classification of animals
This document classifies and describes living things. It divides all living things into two main groups: animals and plants. Animals are further divided into vertebrates and invertebrates. Vertebrates are animals with backbones and include five groups: amphibians, birds, fish, mammals, and reptiles. Invertebrates do not have backbones and include eight groups such as molluscs, flatworms, annelids, and arthropods. Arthropods are further classified into four subgroups: arachnids, centipedes and millipedes, crustaceans, and insects.
Reptile notes: Notes on Class Reptilia and Orders Crocodilia, Testudines, Sq...
Notes on Class Reptilia and Orders Crocodilia, Testudines, Squamata, and Sphenodontia, with visual comparison of venomous snakes in NC
20. Class Reptilia Notes
The document discusses the class Reptilia and its three orders: Testudines (turtles, tortoises and terrapins), Squamata (snakes, lizards, amphibians) and Crocodilia (crocodiles). It notes that reptiles are ectothermic, lay eggs, have scales and breathe air. It provides details on sea turtles, marine iguanas, sea snakes and saltwater crocodiles. It also discusses threats facing some reptile species like habitat loss and overexploitation.
Presentación en Power Point sobre los reptiles
Este documento presenta información sobre los reptiles. Incluye secciones sobre sus características generales como ser ovíparos o vivíparos con escamas duras y secas, su alimentación variada que incluye carnívoros y serpientes que comen presas grandes, sus hábitats terrestres, acuáticos y ambos, su reproducción ovípara o vivípara, curiosidades y preguntas frecuentes sobre serpientes y lagartijas.
Reptiles ppt
Reptiles are cold-blooded animals that can survive on land and in water. There are four main groups of reptiles: crocodiles, lizards, turtles, and snakes. Crocodiles are found in tropical environments and can stay underwater for over an hour. Lizards come in many varieties and shed their skin as they grow. Turtles have a hard shell and can retract their head inside. Snakes shed their skin several times per year as they grow and are carnivorous.
Aniaml kingdom class XI
The document discusses the basic levels of organization in animals from the cellular level to the organ-system level. It also covers embryonic layer arrangements, types of body cavities, segmentation, and the presence or absence of a notochord. Specific animal phyla are then described in detail, including key characteristics and examples for each phylum. The major phyla covered include Porifera, Cnidaria, Ctenophora, Platyhelminthes, Aschelminthes, Annelida, Arthropoda, Mollusca, Echinodermata, Hemichordata, Chordata, and Vertebrata.
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Reptile notes: Notes on Class Reptilia and Orders Crocodilia, Testudines, Sq...
Reptile notes: Notes on Class Reptilia and Orders Crocodilia, Testudines, Sq...
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Gastropods reproductive system
Two gonads in gastropods release eggs or sperm into the coelom cavity, from which the kidneys extract and release them into the mantle cavity and then to the external environment. Gastropods can reproduce through internal fertilization if hermaphroditic, or external fertilization by releasing eggs and sperm into water. Fertilized eggs become trochophore larvae and then veliger larvae, going through metamorphosis to become juvenile and adult gastropods.
Class 8 reproduction in animals Study material pdf
Welcome to the fascinating world of reproduction in animals! In this chapter, we delve into the essential processes that ensure the continuation of life. Reproduction, the biological phenomenon that gives rise to new generations, comes in various forms. From the simple and efficient asexual reproduction to the complex and diverse realm of sexual reproduction, animals have evolved unique strategies to perpetuate their species.
As we journey through this chapter, we'll explore the mechanisms of asexual reproduction, where a single parent can give rise to offspring with identical genetic traits. On the other hand, sexual reproduction involves the intricate dance between male and female gametes, contributing to the creation of offspring with a blend of characteristics from both parents.
Get ready to unravel the mysteries of the male and female reproductive systems, understand the significance of gametes, and explore the miraculous process of fertilization. Join us as we venture into the captivating world of reproduction in animals, where life's intricate tapestry is woven through the delicate threads of birth, growth, and continuity.
For more information, visit- www.vavaclasses.com
CLASSIFICATION OF VERTEBRATES ANIMALS.pptx
Vertebrates are animals that possess a vertebral column or notochord at some point in their life. They evolved from a common ancestor around 600 million years ago and include mammals, birds, reptiles, amphibians, bony fishes, cartilaginous fishes, and jawless fishes. Vertebrates are classified into these 7 classes based on their anatomical and physiological features such as their skeleton, body temperature regulation, reproductive strategies, and more.
Animal morphoanatomy
This document summarizes the key characteristics of 5 organisms: tilapia, milkfish, clam, crab, and snail. It describes how each organism obtains food, reproduces, its body plan, and stages of development. Tilapia and milkfish feed on plankton and aquatic plants/invertebrates. Clams and snails are filter feeders. Crabs are omnivorous. Reproduction involves external or internal fertilization and larval stages for most. The body plans include shells, claws, tails and other distinguishing structures. Development proceeds through embryonic, larval and juvenile stages to sexual maturity.
PLACENTATION IN ELASMOBRANCHS
Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish, including the sharks and the rays, skates, and sawfish. Members of this subclass are characterised by having four to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins and small placoid scales on the skin. The teeth are in several series; the upper jaw is not fused to the cranium, and the lower jaw is articulated with the upper. The details of this jaw anatomy vary between species, and help distinguish the different elasmobranch clades. The pelvic fins in males are modified to create claspers for the transfer of sperm. There is no swim bladder; instead, these fish maintain buoyancy with large livers rich in oil.
placenta is established very early in development. In the placental Elasmohranchs, the Rays and Skates, the yolk-sac persists, the yolk being taken directly into the alimentary canal. In some cases an internal yolk-sac is also present. The blood vessels in the mesoblastic portion of the yolk-sac are also of use in absorbing the fiourishment contained. Observations on the Structure of Uterus & Placenta of Elasmobranchs 3 within it. External gill filaments present in the early stages of the ...
he second mode is that elasmobranchs give birth to live young. The picture is, however, somewhat more complicated than that because there are two methods of live birth. The first is aplacental viviparity (also referred to as ovoviviparity) and involves the pups being retained in the uterus, without a placental connection, until they are sufficiently developed to be able to fend for themselves.
MATTING BEHAVIOR IN AMPHIBIANS.pptx
Mating behavior in amphibians involves courtship displays, mate selection, and copulation. For frogs and toads, males call or display to attract females. Once selected, males grasp females in amplexus and externally fertilize eggs as the female lays them. Salamanders and newts use pheromones, dances, or spermatophores deposited on the ground to reproduce. Caecilians have various reproductive modes, from laying eggs to giving live birth. Courtship involves tactile stimulation or pheromones.
Life cycle of fish parasites from each group
The document summarizes the life cycles of various fish parasites. It describes that parasites can have either direct life cycles using one host or indirect life cycles using multiple hosts. It then examines the life cycles of specific parasite groups in more detail, including protozoans (Ichthyophthirius multifiliis), monogenean flukes (Dactylogyrus sp.), digenean flukes (Clinostomum complanatum), cestodes (Proteocephalus ambloplitis), acanthocephalans (Pallisentis ophiocephali), nematodes (Camallanus lacustris), crustaceans (Argulus sp.), leeches (Piscic
An assignment on Parasitic species ,
The document describes the parasitic tapeworm Avitellina spp. which infects ruminants. It has a life cycle involving multiple hosts, with eggs passed in feces and ingested by intermediate hosts like mites. The eggs hatch inside the intermediate host and develop into larvae, which infect the definitive ruminant host when consumed. Avitellina infections typically do not cause issues unless the burden is large, and are diagnosed via fecal examination. Common treatments include niclosamide, praziquantel, and albendazole.
Fish reproduction
The document summarizes different aspects of fish reproduction, including types (asexual and sexual), sexual maturity timelines that vary by species, diversity in sexes (dioecious and hermaphroditic), modes of sexual reproduction (oviparity, ovoviviparity, viviparity), clutch sizes, courtship synchronism, sexual dimorphism, and various strategies for protecting eggs and young. Sexual reproduction is the most common, involving internal or external fertilization of eggs, while a few fish species can reproduce asexually or are hermaphroditic.
Fish reproduction
The document summarizes different aspects of fish reproduction, including both asexual and sexual reproduction. It discusses types of hermaphroditism, modes of sexual reproduction such as oviparity and viviparity, clutch sizes, courtship behaviors, sexual dimorphism, and various strategies for protecting eggs and young, such as mouth brooding, external brooding, gill brooding, and nest building. Sexual maturity varies widely between species, from shortly after birth to over 10 years of age depending on size, lifespan, and other factors.
Fish reproduction
The document summarizes different aspects of fish reproduction, including both asexual and sexual reproduction. It discusses types of hermaphroditism, modes of sexual reproduction such as oviparity and viviparity, clutch sizes, courtship behaviors, sexual dimorphism, and various strategies for protecting eggs and young, such as mouth brooding, external brooding, gill brooding, and nest building. Sexual maturity varies widely between species, from shortly after birth to over 10 years of age depending on size, lifespan, and other factors.
Fish reproduction
The document summarizes different aspects of fish reproduction, including both asexual and sexual reproduction. It discusses types of hermaphroditism, modes of sexual reproduction such as oviparity and viviparity, clutch sizes, courtship behaviors, sexual dimorphism, and various strategies for protecting eggs and young, such as mouth brooding, external brooding, gill brooding, and nest building. Sexual maturity varies widely between species, from shortly after birth to over 10 years of age depending on size, lifespan, and other factors.
Fish reproduction
The document summarizes different aspects of fish reproduction, including both asexual and sexual reproduction. It discusses types of hermaphroditism, modes of sexual reproduction such as oviparity and viviparity, clutch sizes, courtship behaviors, sexual dimorphism, and various strategies for protecting eggs and young, such as mouth brooding, external brooding, gill brooding, and nest building. Sexual maturity varies widely between species, from shortly after birth to over 10 years of age depending on size, lifespan, and other factors.
Earth and Life Science-Q2-WK3-ANIMAL-REPRODUCTION.pptx
1) Animals reproduce either sexually or asexually. Asexual reproduction involves a single parent and cell division or splitting, producing offspring identical to the parent.
2) Sexual reproduction involves male and female gametes fusing during internal or external fertilization. Most animals are sexually dimorphic with separate sexes.
3) Fertilization can occur internally, as seen in mammals and birds, or externally, as with fish and amphibians where egg and sperm meet outside the body. This determines if offspring develop inside or outside the parent.
Reptile repro. and diseases
Reptiles reproduce through three main methods - oviparity where eggs are laid and hatch externally, viviparity with live birth, and ovoviviparity where eggs are retained internally and hatch within the mother's body. Turtles lay eggs in nests with no parental care, while snakes may be oviparous, ovoviviparous, or viviparous. Lizards also use these three reproduction methods and females exhibit dimorphism. Crocodilians only use oviparity, building nests and providing parental care until hatching.
Reptile reproduction and diseases
Reptiles reproduce through three main methods - oviparity where eggs are laid and hatch externally, viviparity with live birth, and ovoviviparity where eggs are retained internally and hatch within the mother's body. Turtles lay eggs in nests with no parental care, while snakes may be oviparous, ovoviviparous, or viviparous. Lizards also use these three reproduction methods and females exhibit dimorphism. Crocodilians are solely oviparous, building nests and providing parental care until hatching.
Chagu
The document provides information on the life cycles of several common parasites and pests, including mosquitoes, cockroaches, lice, roundworm (Ascaris lumbricoides), hookworm, and rats. It describes the egg, larval, pupal, and adult stages for each organism and notes key details about development times, habitats, and transmission methods.
Round worms
Roundworms have complex life cycles involving eggs passed in feces that develop into infective larvae. Puppies, kittens, and young animals are most commonly infected through prenatal, nursing, or environmental exposure. Roundworm larvae migrate through tissues before maturing and reproducing in the intestines, completing their life cycles. Regular deworming is especially important for hunting or outdoor animals to prevent roundworm infection and spread.
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Class 8 reproduction in animals Study material pdf
Class 8 reproduction in animals Study material pdf
Earth and Life Science-Q2-WK3-ANIMAL-REPRODUCTION.pptx
Earth and Life Science-Q2-WK3-ANIMAL-REPRODUCTION.pptx
More from Teresa Briercliffe
Extra Credit Exam Question Variation
An Australian study of 14,000 twin pairs sought to determine if there was a genetic basis for homosexuality. They focused on male identical twins. The researchers found that of the identical twin pairs where one twin was homosexual, 38% of the time the other twin was also homosexual. This suggests there may be a genetic influence for sexual orientation. However, the conclusion has limitations since other environmental factors could also influence sexual orientation.
Variation Lesson One
This 1 hour 30 minute lesson introduces students to the concept of variation within and between species. It aims to teach students key terms like genotype, phenotype, intraspecific and interspecific variation. The lesson will explore the genetic and environmental causes of variation and how variation can be measured on continuous or discontinuous scales. Students will consider examples of human traits that vary and sort them based on likely genetic or environmental influences. They will also discuss how confident we can be about stating single causes of variation, as influences are often complex.
Variation Lesson Two
Twins are used in variation studies because they allow researchers to isolate the effects of genetic and environmental factors. Studying twins who share genes but are raised in separate environments or together in the same environment can show whether differences between twins are due to nature or nurture. This helps researchers understand the relative contributions of genetic and environmental influences on traits.
Variation Is.
Variation exists between individuals of the same species due to both genetic and environmental factors. Genetic causes of variation include differences in DNA sequences between individuals, while environmental factors such as diet, climate, and other external influences can also impact variation. The document explores the sources and causes of variation between individuals.
Magnification Questions
This document contains practice biology questions about magnification and measurements of biological structures and cells. It includes images of a fish gill magnified 400x and asks the actual length of a filament. It also includes an image of a parasite spine magnified 1000x and asks the actual length. Finally, it includes drawings of a pancreatic cell measured at 8.6 micrometers and E. coli cells typically 2 micrometers long, asking the magnification of the images.
Biology Mock Exam
The document provides instructions for a biology mock exam to be taken at Haringey Sixth Form Centre Science Department. Students are to write their name and take a one hour exam with questions worth a total of 50 marks. Pencils, rulers, pens and calculators are required materials for the test.
Biology Homework Mark The Mock
This document contains an October biology mock exam paper for A. Student at Haringey Sixth Form Centre Science Department. The exam is one hour long and consists of multiple choice and short answer questions related to biology topics like enzymes, temperature effects on reaction rates, carbohydrates, and digestion. The questions assess understanding of key concepts and require explaining processes like hydrolysis, competitive inhibition, and the effects of enzyme denaturation.
Protein True And False
The document discusses proteins, stating that proteins are made of amino acids joined by peptide bonds, enzymes are proteins, antibodies are proteins, and there are 20 standard amino acids. Key proteins mentioned include keratin, actin, myosin, collagen, hemoglobin, and structural and transport proteins.
S
This document provides resources for investigating the effectiveness of methods to prevent the spread of swine flu, including petri dishes, agar, hand sanitizer, face masks, and bacteria samples. Students will work in small groups to plan an investigation with an hypothesis, risk assessment, and method section. Their assignment is to begin drafting an independent report with these planned sections and revising their introduction based on feedback.
Study Support Biohemical Molecules
This document provides guidance for creating a revision poster on biological molecules. It lists definitions, terminology, diagrams, monomers to polymers, and reactions that should be included. The poster must cover the structure of amino acids, glucose, and nucleotides as well as key terms like mono, di, tri, and poly. It will be reviewed and tested on October 9th to support an AS Biology class.
Swine Flu 1 Pdf
The document discusses swine flu and provides safety advice. It notes that antibiotics will not help with swine flu as it is a viral infection. It recommends wearing a safety harness if leaning out a window to avoid the risk of falling and injury.
Food Testing Carbohydrates
The document provides instructions for performing a series of tests to identify carbohydrates in food products. It describes preparing food samples, carrying out Benedict's test for reducing sugars, testing sensitivity of Benedict's test and Clinistix strips, and performing biochemical tests for non-reducing sugars and starch using Benedict's reagent and iodine solution. Observations are recorded and deductions made to identify which foods contain reducing sugars, non-reducing sugars, and starch.
Digestive System Label And Function
The human digestive system consists of the mouth, esophagus, stomach, small intestine, large intestine, and rectum. Food moves through this system where it is broken down and absorbed. The small intestine plays an important role in digestion through villi and microvilli that increase surface area for absorption. Glands like the salivary glands, pancreas, and liver secrete enzymes to further break down food into molecules that can be absorbed and used by the body.
Liz Claiborne Teen Dating Abuse Article
I. Incidences of teen dating abuse are unexpectedly high, with nearly 1 in 3 teens reporting sexual abuse, physical abuse, or threats of physical abuse, and nearly 1 in 2 reporting being controlled or pressured into unwanted acts. Many teens also know someone who has been abused.
II. There appears to be a link between families experiencing economic problems, higher levels of domestic violence between parents, and teens experiencing higher rates of dating abuse themselves.
III. Despite the high levels of abuse, most parents are dangerously unaware of the dating abuse occurring in their teens' lives.
Chd Case Study
Benny is a 54-year-old man whose lifestyle puts him at high risk for cardiovascular disease. He has a sedentary job and lifestyle aside from walking his dog once a day. His diet is unhealthy and high in cholesterol. He smokes 40 cigarettes per day. His father died of a heart attack in his late 40s, indicating a genetic risk factor.
Liz Claiborne Teen Dating Abuse Article
I. Incidences of teen dating abuse are unexpectedly high, with nearly 1 in 3 teens reporting sexual abuse, physical abuse, or threats of physical abuse, and nearly 1 in 2 reporting being controlled or pressured into unwanted acts. Many teens also know someone who has experienced abuse.
II. There appears to be a link between families experiencing economic problems, higher levels of domestic violence between parents, and teens experiencing higher rates of dating abuse themselves.
III. Despite the high levels of abuse, most parents are dangerously unaware of the dating abuse occurring in their teens' lives.
A2 And As Course Handbook
This document is a course handbook for AS and A2 Biology students at Haringey Sixth Form Centre. It provides information about staff roles, the course structure and units, assessment details, progression opportunities, expectations of students, a calendar of the academic year, study skills advice, health and safety policies, required equipment, and recommended reading materials and websites. The handbook is intended to give students all the necessary information to succeed in the course throughout their time at the Centre.
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快速办理(加拿大CBU毕业证书)卡普顿大学毕业证毕业完成信一模一样
学校原件一模一样【微信：741003700 】《(加拿大CBU毕业证书)卡普顿大学毕业证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
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三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
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◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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一比一原版(McGill毕业证书)麦吉尔大学毕业证如何办理
学校原件一模一样【微信：6496090 】【(McGill毕业证书)麦吉尔大学毕业证成绩单】【微信：6496090 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微6496090
【主营项目】
一.毕业证【q微6496090】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微6496090】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(McGill毕业证书)麦吉尔大学毕业证【微信：6496090 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(McGill毕业证书)麦吉尔大学毕业证【微信：6496090 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(McGill毕业证书)麦吉尔大学毕业证【微信：6496090 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(McGill毕业证书)麦吉尔大学毕业证【微信：6496090 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
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Welcome to the world of social media, where Instagram reigns supreme! Today, we're going to explore a fascinating tool called Insanony that lets you watch Instagram Stories secretly. If you've ever wanted to view someone's story without them knowing, this blog is for you. We'll delve into everything you need to know about Insanony with Trending Blogers!
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留信网认证的作用:
1:该专业认证可证明留学生真实身份【微信：6496090】
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
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Reptiles Wiki
- 1. Classification: Reptiles Reptiles Reptiles are air-breathing, cold- blooded vertebrates that have skin covered in scales as op- posed to hair or feathers. They are tetrapods (having or having descended from vertebrates with four limbs) and amniotes, whose embryos are surrounded by an amniotic membrane. Modern rep- tiles inhabit every continent with the exception of Antarctica, and are represented by four living or- ders: * Crocodilia (crocodiles, gavials, caimans and alligators): 23 species * Sphenodontia (tuatara from New Zealand): 2 species * Squamata (lizards, snakes and amphisbaenids ("worm-lizards"): ap- proximately 7,900 species * Testudines (turtles, tortoises and terrapins): approximately 300 spe- cies The majority of reptile species are oviparous (egg-laying) although certain species of squamates are capable of giving live birth. This is achieved, either through ovovivi- parity (egg retention), or viviparity (offspring born without use of cal- cified eggs). Many of the vivipa- rous species feed their fetuses through various forms of placenta analogous to those of mammals with some providing initial care for their hatchlings. Extant reptiles range in size from the newly-discovered Jaragua Sphaero, at 1.6 cm (0.6 in), to the Saltwater Crocodile, at up to at least 7 m (23 ft). Reptiles! 1