Reproduction 2eso FDG
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This document discusses asexual and sexual reproduction in animals and plants. It covers topics like budding, fragmentation, life cycles, external and internal fertilization, viviparity and oviparity in animals. In plants, it discusses spore formation, vegetative reproduction, pollination, flower structure, and fertilization and seed formation.
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Methods of reproduction in some animals (science)
Fragmentation is a type of asexual reproduction where an organism breaks into two or more parts that can each grow into a separate individual, as seen in flatworms which can regenerate into whole organisms if cut in half. Many flatworms and annelids like earthworms are hermaphrodites, having both male and female reproductive organs, though earthworms need to mate with another worm to fertilize eggs, which they do by joining heads and tails to exchange sperm before releasing eggs and cocooning them.
Animal Reproduction
There are two main types of reproduction: sexual reproduction which involves two parents and asexual reproduction which involves only one parent. Sexual reproduction occurs through the fusion of male and female gametes during fertilization, either externally or internally depending on the species, forming a zygote. The zygote then develops into an embryo through gestation and is born live or hatched from an egg. Development and metamorphosis describe the physical changes an animal undergoes as it grows from an embryo or larva into an adult.
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Animal reproduction can occur through asexual or sexual reproduction. Asexual reproduction involves a single parent and occurs through processes like binary fission, multiple fission, and budding. Sexual reproduction involves the fusion of male and female gametes - sperm and egg. In animals, gametes are produced in specialized reproductive organs. Fertilization, the fusion of sperm and egg, can occur internally or externally. Internal fertilization occurs in animals like birds and mammals, where fertilization takes place inside the female's body. External fertilization occurs in aquatic animals like frogs, where fertilization happens outside in water after the release of gametes.
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Animal reproduction ppt
Animal reproduction can occur through either sexual or asexual means. Sexual reproduction involves the fusion of male and female gametes (sperm and egg) to form a zygote, while asexual reproduction generates new individuals without the fusion of gametes through mitosis. Common forms of asexual reproduction in invertebrates include fission, budding, and parthenogenesis. Most animals exhibit seasonal cycles in sexual reproductive activity related to environmental cues like changes in day length or temperature. Fertilization can be external or internal.
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Sexual reproduction in animals involves the production of gametes - eggs from females in ovaries and sperm from males in testes. Eggs are larger and cannot move while sperm are smaller and swim. Fertilization occurs when the sperm nucleus enters the egg nucleus and they join to form a zygote. External fertilization happens outside the body in water animals, while internal fertilization occurs inside the female's body in land animals and some aquatic animals, requiring specialized sex organs. After fertilization, the zygote may be enclosed in a shell and released or remain inside the female's body to develop.
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Methods of reproduction in some animals (science)
Fragmentation is a type of asexual reproduction where an organism breaks into two or more parts that can each grow into a separate individual, as seen in flatworms which can regenerate into whole organisms if cut in half. Many flatworms and annelids like earthworms are hermaphrodites, having both male and female reproductive organs, though earthworms need to mate with another worm to fertilize eggs, which they do by joining heads and tails to exchange sperm before releasing eggs and cocooning them.
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There are two main types of reproduction: sexual reproduction which involves two parents and asexual reproduction which involves only one parent. Sexual reproduction occurs through the fusion of male and female gametes during fertilization, either externally or internally depending on the species, forming a zygote. The zygote then develops into an embryo through gestation and is born live or hatched from an egg. Development and metamorphosis describe the physical changes an animal undergoes as it grows from an embryo or larva into an adult.
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A basic overview of what sexual reproduction involves, what meiosis, fertilisation and development are using a hen as an example.
Reproduction in animals
Animal reproduction can occur through asexual or sexual reproduction. Asexual reproduction involves a single parent and occurs through processes like binary fission, multiple fission, and budding. Sexual reproduction involves the fusion of male and female gametes - sperm and egg. In animals, gametes are produced in specialized reproductive organs. Fertilization, the fusion of sperm and egg, can occur internally or externally. Internal fertilization occurs in animals like birds and mammals, where fertilization takes place inside the female's body. External fertilization occurs in aquatic animals like frogs, where fertilization happens outside in water after the release of gametes.
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This document summarizes key aspects of animal reproduction and development. It discusses asexual and sexual reproduction, including the components of reproductive systems and processes like fertilization, cleavage, and gastrulation. It also describes embryonic development, including the formation of extraembryonic membranes in different animal groups and the roles of structures like the blastocyst, chorion, amnion, yolk sac, and allantois in mammalian development.
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Animal reproduction can occur through either sexual or asexual means. Sexual reproduction involves the fusion of male and female gametes (sperm and egg) to form a zygote, while asexual reproduction generates new individuals without the fusion of gametes through mitosis. Common forms of asexual reproduction in invertebrates include fission, budding, and parthenogenesis. Most animals exhibit seasonal cycles in sexual reproductive activity related to environmental cues like changes in day length or temperature. Fertilization can be external or internal.
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The document summarizes the reproductive systems of major animal phyla. Most reproduce sexually with internal or external fertilization, while some can also reproduce asexually through budding, fragmentation, or other means. Reproductive structures and strategies vary widely between phyla from broadcast spawning of gametes to live birth of offspring. The evolution of the amniotic egg allowed for protected development on land in reptiles, birds, and mammals.
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Sexual reproduction in animals involves the production of gametes - eggs from females in ovaries and sperm from males in testes. Eggs are larger and cannot move while sperm are smaller and swim. Fertilization occurs when the sperm nucleus enters the egg nucleus and they join to form a zygote. External fertilization happens outside the body in water animals, while internal fertilization occurs inside the female's body in land animals and some aquatic animals, requiring specialized sex organs. After fertilization, the zygote may be enclosed in a shell and released or remain inside the female's body to develop.
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4. Sexual vs. Asexual Reproduction
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This document summarizes key aspects of sexual and asexual reproduction. It describes the male and female reproductive systems in humans and other animals like frogs. It explains processes like fertilization, embryo and fetus development, and metamorphosis. It also discusses asexual reproduction methods like binary fission, budding, and cloning. It provides examples of sexual reproduction in frogs and discusses test-tube babies and viviparous versus oviparous animals.
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The document discusses various modes of reproduction in animals. It describes asexual reproduction methods like budding and fragmentation where offspring are clones of the parent. It also covers sexual reproduction, noting external fertilization in many fish and internal fertilization in most other animals. Five main types of sexual reproduction are outlined: oviparity, ovoviviparity, histotrophic viviparity, hemotrophic viviparity, and hermaphroditism in which an animal can change or have both sexes simultaneously. Examples are provided for each method.
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This document summarizes the history and types of asexual reproduction, known as parthenogenesis, in various species. It notes that parthenogenesis was first discovered in chickens in the 1800s and has since been observed in other domesticated birds and reptiles, as well as hammerhead sharks. The document outlines different types of parthenogenesis, including facultative (can reproduce sexually or asexually depending on conditions), cyclic/heterogony (alternates between sexual and asexual generations), and artificial (induced chemically or through temperature changes). Several insect and reptile species are capable of facultative parthenogenesis.
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This document provides an overview of animal reproduction and development. It discusses both asexual and sexual reproduction mechanisms in animals. For sexual reproduction, it describes the processes of gamete production, fertilization through internal or external means, and embryonic development through cleavage, gastrulation and organogenesis. For embryonic development, it highlights adaptations in amniotes including extraembryonic membranes. Offspring can be precocial or altricial at birth depending on the level of development.
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This document provides an overview of animal reproduction and development. It discusses both asexual and sexual reproduction in animals. Asexual reproduction occurs through fission, budding, fragmentation, and parthenogenesis. Sexual reproduction involves the fusion of male and female gametes during internal or external fertilization. After fertilization, embryonic development proceeds through cleavage, gastrulation, and organogenesis stages. The embryo develops three germ layers that give rise to different tissues and organs. Parental care helps many animals ensure the survival of offspring to reproductive age.
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Animal reproduction can occur through sexual or asexual methods. Sexual reproduction involves the fusion of male and female gametes through processes like internal and external cross-fertilization in mammals, fish, and amphibians. Asexual reproduction occurs through parthenogenesis, budding, and self-fertilization in certain invertebrates and hermaphroditic species.
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Stage 1 (Menstruation): The lining of the uterus sheds and is expelled from the body. The ovaries do not release an egg.
Stage 2 (Follicular phase): Under the influence of hormones FSH and estrogen, follicles in the ovaries mature and one follicle prepares to release its egg (ovum).
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This document provides information about various methods of asexual reproduction in animals. It describes several methods including binary fission, budding, fragmentation, regeneration, and parthenogenesis. Examples are given for each method, such as how amoebas reproduce through binary fission and how ants can reproduce through parthenogenesis. The document aims to define asexual reproduction and outline its advantages and disadvantages compared to sexual reproduction.
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At the end of the one hour period, the Grade 5 learners should be able to:
1. identify the methods of sexual reproduction in animals;
2. categorize different animals into internal and external fertilization; and
3. state the difference of internal and external fertilization using a venn diagram.
Animal reproduction
There are two main types of reproduction: asexual and sexual. Asexual reproduction involves a single organism and produces offspring via fission, budding, or regeneration. Sexual reproduction involves the union of male and female gametes - sperm and egg - called fertilization, producing a zygote that develops into a new individual. Fertilization can be external, with the gametes uniting outside the body, or internal within the female reproductive tract.
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House flies, chickens, and other animals reproduce through various life cycles and methods. Sexual reproduction can involve internal or external fertilization, while asexual reproduction occurs through budding or regeneration without fertilization. Advanced breeding techniques for animals include selective breeding, artificial insemination, embryo transfer, and cloning.
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This document provides definitions and information about key terms related to animal reproduction and genetics, including terminology for reproductive management, breeding systems, the anatomy and functions of the male and female reproductive systems in various livestock species, cell division, fertilization, chromosomes, genes, heredity, and genetic prediction using Punnett squares. It covers topics such as estrus, gestation, parturition, inbreeding, crossbreeding, the ovaries, testicles, sperm, eggs, dominant and recessive genes, homozygous and heterozygous, and using genetics to predict offspring traits.
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This document summarizes key aspects of sexual and asexual reproduction. It describes the male and female reproductive systems in humans and other animals like frogs. It explains processes like fertilization, embryo and fetus development, and metamorphosis. It also discusses asexual reproduction methods like binary fission, budding, and cloning. It provides examples of sexual reproduction in frogs and discusses test-tube babies and viviparous versus oviparous animals.
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Reproduction is a key characteristic of living organisms that allows for the continuation of life across generations. It occurs through both asexual and sexual reproduction. Asexual reproduction involves only one parent and produces offspring that are genetically identical, while sexual reproduction involves two parents and introduces genetic variation. Some common asexual reproduction methods include budding, regeneration, and parthenogenesis. Sexual reproduction results in offspring with a mix of genetic traits from both parents and helps to promote genetic diversity.
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The document discusses various modes of reproduction in animals. It describes asexual reproduction methods like budding and fragmentation where offspring are clones of the parent. It also covers sexual reproduction, noting external fertilization in many fish and internal fertilization in most other animals. Five main types of sexual reproduction are outlined: oviparity, ovoviviparity, histotrophic viviparity, hemotrophic viviparity, and hermaphroditism in which an animal can change or have both sexes simultaneously. Examples are provided for each method.
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Animals reproduce by either laying eggs or giving birth. Birds exclusively reproduce through egg laying. Some parent animals incubate their eggs by sitting on them to keep them warm. Eggs have a protective shell, inside of which is an albumen containing protein and a yolk containing nutrients for embryo development. The embryo develops into a chick. An animal's life cycle involves various developmental stages from embryo to adult. Frogs lay eggs that hatch into tadpoles, which undergo metamorphosis to grow legs and lose their tails before becoming adults. Butterflies lay eggs that hatch into caterpillars, which form cocoons and pupate before emerging as adult butterflies.
Sexual reproduction in vertebrates
Vertebrates reproduce sexually, with internal or external fertilization depending on habitat. They exhibit three reproductive strategies: oviparity, where eggs hatch outside the mother; ovoviviparity, where eggs hatch inside the mother; and viviparity, where embryos develop internally and receive nourishment from the mother. Sexual reproduction involves the fusion of male sperm and female eggs to form genetically diverse offspring. Vertebrates display various sexual reproduction patterns including dioecy, parthenogenesis, and hermaphroditism. While increasing genetic diversity, sexual reproduction requires finding mates and has energy costs that asexual reproduction avoids.
Parthenogenesis
This document summarizes the history and types of asexual reproduction, known as parthenogenesis, in various species. It notes that parthenogenesis was first discovered in chickens in the 1800s and has since been observed in other domesticated birds and reptiles, as well as hammerhead sharks. The document outlines different types of parthenogenesis, including facultative (can reproduce sexually or asexually depending on conditions), cyclic/heterogony (alternates between sexual and asexual generations), and artificial (induced chemically or through temperature changes). Several insect and reptile species are capable of facultative parthenogenesis.
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This document provides an overview of animal reproduction and development. It discusses both asexual and sexual reproduction mechanisms in animals. For sexual reproduction, it describes the processes of gamete production, fertilization through internal or external means, and embryonic development through cleavage, gastrulation and organogenesis. For embryonic development, it highlights adaptations in amniotes including extraembryonic membranes. Offspring can be precocial or altricial at birth depending on the level of development.
Unit 5 animal reproduction and development
This document provides an overview of animal reproduction and development. It discusses both asexual and sexual reproduction in animals. Asexual reproduction occurs through fission, budding, fragmentation, and parthenogenesis. Sexual reproduction involves the fusion of male and female gametes during internal or external fertilization. After fertilization, embryonic development proceeds through cleavage, gastrulation, and organogenesis stages. The embryo develops three germ layers that give rise to different tissues and organs. Parental care helps many animals ensure the survival of offspring to reproductive age.
Sexual reproduction in animals teacher
Animal reproduction can occur through sexual or asexual methods. Sexual reproduction involves the fusion of male and female gametes through processes like internal and external cross-fertilization in mammals, fish, and amphibians. Asexual reproduction occurs through parthenogenesis, budding, and self-fertilization in certain invertebrates and hermaphroditic species.
Reproduction in animals
Here are brief descriptions of the changes taking place in each stage of the human menstrual cycle:
Stage 1 (Menstruation): The lining of the uterus sheds and is expelled from the body. The ovaries do not release an egg.
Stage 2 (Follicular phase): Under the influence of hormones FSH and estrogen, follicles in the ovaries mature and one follicle prepares to release its egg (ovum).
Stage 3 (Ovulation): A surge of LH causes the mature follicle to rupture and release the ovum. The follicle then develops into the corpus luteum which secretes progesterone.
Stage 4 (Luteal phase): Under the influence of progesterone, the lining of the uterus thick
Reproductive strategies in mammals
Types of Reproduction, Mating System, Monogamy, Polygamy
Mode of Reproduction in Monotremes, Marsupials and Placental mammals, Courtship Behavior.
Asexual Reproduction in Animals (Quick Review)
Asexual reproduction is a type of reproduction that involves only one parent where the offspring are genetically identical clones. It occurs through several methods including binary fission, budding, regeneration, parthenogenesis, and cloning. The common forms are binary fission where a single parent divides into two identical offspring, budding where new individuals bud off from the parent, and regeneration where a lost body part regrows into a whole new individual.
Integrated Science M3 Asexual Reproduction in animals
This document provides information about various methods of asexual reproduction in animals. It describes several methods including binary fission, budding, fragmentation, regeneration, and parthenogenesis. Examples are given for each method, such as how amoebas reproduce through binary fission and how ants can reproduce through parthenogenesis. The document aims to define asexual reproduction and outline its advantages and disadvantages compared to sexual reproduction.
Sexual Reproduction in Animal (Internal and External Fertilization
Lesson Objectives
At the end of the one hour period, the Grade 5 learners should be able to:
1. identify the methods of sexual reproduction in animals;
2. categorize different animals into internal and external fertilization; and
3. state the difference of internal and external fertilization using a venn diagram.
Animal reproduction
There are two main types of reproduction: asexual and sexual. Asexual reproduction involves a single organism and produces offspring via fission, budding, or regeneration. Sexual reproduction involves the union of male and female gametes - sperm and egg - called fertilization, producing a zygote that develops into a new individual. Fertilization can be external, with the gametes uniting outside the body, or internal within the female reproductive tract.
Animal reproduction
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Reproduction
The Three Steps of Reproduction
Male Reproductive System
Female Reproductive System
Animal life cycle
House flies, chickens, and other animals reproduce through various life cycles and methods. Sexual reproduction can involve internal or external fertilization, while asexual reproduction occurs through budding or regeneration without fertilization. Advanced breeding techniques for animals include selective breeding, artificial insemination, embryo transfer, and cloning.
Powerpoint
This document provides definitions and information about key terms related to animal reproduction and genetics, including terminology for reproductive management, breeding systems, the anatomy and functions of the male and female reproductive systems in various livestock species, cell division, fertilization, chromosomes, genes, heredity, and genetic prediction using Punnett squares. It covers topics such as estrus, gestation, parturition, inbreeding, crossbreeding, the ovaries, testicles, sperm, eggs, dominant and recessive genes, homozygous and heterozygous, and using genetics to predict offspring traits.
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Unit 4, Lesson 4.5 - Sexual Reproduction in Animals
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