4. molluscs clams and octopus
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The document discusses several classes of mollusks including bivalves, squid, and octopuses. Bivalves like clams, mussels and oysters have two-valved shells and filter feed. They include blue mussels, giant pacific oysters, mahogany clams and geoducks, the world's largest burrowing clam. Squid and octopuses make up the cephalopoda class and are characterized by advanced intelligence. Market squid school in large numbers while giant pacific octopuses can change color and mimic their surroundings.
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The document provides an overview of the phylum Mollusca, including general information about their anatomy, habitat, reproduction cycles, classes, and examples. The phylum contains over 90,000 living species ranging from microscopic to over 20 meters in size. They are mostly marine but also found in freshwater and terrestrial environments. Their body plans and features vary between classes but generally include a mantle, visceral mass, and foot, with some having shells.
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The phylum Mollusca contains soft-bodied animals with an external shell or internal shell. They have a mantle, foot, and some have a radula. The main classes are Gastropoda (snails, slugs), Bivalvia (clams, oysters), Cephalopoda (octopuses, squid), and Polyplacophora (chitons). Mollusks vary in shell number, anatomy, and lifestyle, from free-swimming to burrowing to sessile.
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The document discusses the phylum Mollusca, which includes snails, slugs, clams, oysters, octopuses and squids. It describes their body plans, classes, lifecycles, and interactions with humans. Molluscs evolved in the sea and most are marine, though some inhabit freshwater or land. Humans use molluscs as food and for pearls, buttons, and as hosts for parasites. The four main classes are gastropods, bivalves, cephalopods, and chitons. Bivalves like mussels and oysters are mostly sessile filter feeders with two shells and siphons.
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Mollusks are a large phylum of invertebrate animals including snails, slugs, clams, oysters, octopuses and squid. They have soft bodies and some species have shells while others do not. Mollusks are divided into three main classes - bivalves like clams which have two shells, gastropods like snails which have one shell or no shell, and cephalopods like octopuses and squid which are the most complex and recently evolved mollusks.
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This document summarizes key characteristics of the phylum Mollusca. It describes the 9 main classes of molluscs: Gastropoda, Bivalvia, Cephalopoda, Scaphopoda, Monoplacophora, Polyplacophora, Aplacophora. The classes vary in body structure, shell morphology, habitat, locomotion and other traits. Molluscs display a range of ecologically and economically important roles including as human food sources, sources of pearls, and intermediate hosts of parasites.
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The document provides information about the phylum Mollusca. It discusses that Mollusca is the second largest phylum and includes animals such as snails, squids, clams, and octopuses. It then summarizes the key characteristics of several mollusc classes, including Bivalvia (clams and mussels), Gastropoda (snails), and Cephalopoda (octopuses and squids). The document also describes some unique adaptations of molluscs and their life cycles.
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Mollusks are a diverse phylum with over 50,000 species across 10 classes. They include squid, octopus, clams, snails, and oysters. Mollusks have a mantle, foot, and radula as basic anatomical structures. The foot is adapted for movement and the mantle circulates water and secretes shells. Gastropoda includes snails and slugs with a radula and sometimes a shell. Bivalvia includes clams and oysters with two hinged shells and siphons. Cephalopoda are advanced mollusks like squid and octopus with specialized features for swimming including fins or jet propulsion.
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- Molluscs are a large phylum of invertebrate animals that live in both marine and freshwater habitats. They are highly diverse in size, anatomy, behavior, and habitat.
- The phylum contains around 85,000 species and is divided into several classes, with gastropods making up 80% of species. Cephalopods like squid and octopus are among the most neurologically advanced invertebrates.
- Molluscs have a mantle cavity used for breathing and excretion and a nervous system organized around ganglia. Their shells have been important resources for humans.
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This document discusses the phylum Mollusca, class Gastropoda. It notes that gastropods include snails and slugs, with over 35,000 species. They are the largest and most varied class. The document then provides details on gastropod anatomy like their operculum and mantle, how they move, breathe and reproduce. It describes different gastropod species like terrestrial and sea slugs. It discusses defenses like cryptic coloration to avoid predation.
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The document describes key characteristics of the phylum Mollusca. It includes information on their anatomy, physiology and taxonomy. Some key points are:
- Molluscs are soft-bodied or shelled animals including snails, slugs, clams, squid and octopuses.
- They have a mantle, visceral mass, and in most cases a shell secreted by the mantle.
- Major classes include gastropods, bivalves, cephalopods, chitons and others.
- Life cycles typically involve a trochophore larva, veliger larva and indirect development to adulthood.
Phylum Mollusca Intro Notes
The phylum Mollusca includes over 100,000 species of soft-bodied animals including snails, slugs, mussels, clams, oysters, squids, octopuses and nautiluses. Mollusk bodies are triploblastic and bilaterally symmetrical, with three main regions - the head-foot, visceral mass containing organs, and mantle secreting the shell. The mantle cavity functions in excretion, gas exchange and release of reproductive products. Mollusks use a radula with rows of teeth on their tongue and most have an open circulatory system. There are eight classes but the important ones are Gastropoda containing snails and slugs, B
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Mollusks are a large phylum of invertebrate animals that first appeared during the Cambrian period. They have soft bodies that are usually protected by an external calcium carbonate shell. Their bodies have three main zones - a head-foot, visceral mass, and mantle. There are several major classes of mollusks including bivalves like clams and mussels, cephalopods like squid and octopuses, gastropods like snails, and others. Mollusks play important roles in ecosystems as prey for other animals or by filtering water. They also have commercial and medical significance for humans.
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The document discusses the phylum Mollusca, including their body plans and three main classes. Molluscs are soft-bodied animals that live in various aquatic and moist environments. They have a mantle that secretes a shell in most species and organs like gills. The three classes are bivalves like clams that have two hinged shells, gastropods like snails that have a muscular foot and often a single coiled shell, and cephalopods like octopuses and squid that have tentacles surrounding their head and well-developed eyes and nervous systems.
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Mollusca is the second largest phylum of invertebrate animals. They are economically important, both beneficially and destructively. Beneficially, molluscs provide food, pearls, decorative shells, pigments, and are used as fishing bait. Destructively, some damage gardens and orchards as plant pests, while shipworms damage boats and wood. Certain molluscs also prey on other molluscs, damaging industries like oyster farming. Overall, molluscs are an important global economic factor.
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The document discusses the phylum Mollusca, including their classes, evolution, anatomy, locomotion, respiration, excretion, and examples of important molluscs. It notes that molluscs make up 23% of all marine species and the gastropoda class is second only to insects in numbers. Examples highlighted include the giant tiger snail, kleptoparasitic sea slug Elysia chlorotica, and tiny squid Pickfordiateuthis pulchella.
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The document discusses the Phylum Mollusca. There are over 50,000 mollusk species across 8 classes, including snails, slugs, squids, clams, and mussels. Most mollusks have shells that leave good fossils. They move in various ways, like gliding with waves or using jet propulsion. Adaptations like shells provide defense from predators, while squid use ink shots. Mollusks have three body zones - head, visceral mass, and mantle - and cannot regulate their own body temperature.
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The document discusses key characteristics of molluscs including that they all possess a shell composed of calcium carbonate during some stage of their life cycle. It notes that acidification of oceans poses a threat by dissolving new shell growth. It provides examples and details on different classes of molluscs including chitons, gastropods like limpets, abalone, whelks, and sea slugs; describing traits like their shells, feeding methods, and life cycles.
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The document provides information about the phylum Mollusca. It discusses the key defining characteristics of molluscs such as the mantle, radula, and foot. It describes the diverse range of mollusc classes including chitons, snails, slugs, clams, squids and octopuses. The text also covers mollusc anatomy, physiology, feeding habits, habitats, fossil records, taxonomy, reproduction and their interactions with humans.
12. Phylum Mollusca Notes
Mollusks are a diverse phylum with over 50,000 species across 10 classes. They include squid, octopus, clams, snails, and oysters. Mollusks have a mantle, foot, and radula as basic anatomical structures. The foot is adapted for movement and the mantle circulates water and secretes shells. Gastropoda includes snails and slugs with a radula and sometimes a shell. Bivalvia includes clams and oysters with two hinged shells and siphons. Cephalopoda are advanced mollusks like squid and octopus with specialized features for swimming including fins or jet propulsion.
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The document discusses the class Gastropoda, which includes snails, whelks, and limpets. It describes their morphology, anatomy, shell structures, forms, ornamentation, and evolutionary trends. Key points include: Gastropods have a coiled, spiral shell with an open anterior end called the aperture; their shells come in many forms depending on factors like spire angle and whorl size; and evolutionary trends have led to increased coiling, ornamentation loss, and aperture modification over time in both dextral and sinistral forms from the Triassic to present.
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The document discusses the three main classes of mollusks: gastropods which include slugs and snails, bivalves like clams that have two shells, and cephalopods such as squid and octopus. It provides details about their anatomy including that they have a foot, visceral mass containing organs, and mantle that secretes shells for most. It also describes how different types eat, their circulatory systems, and nervous systems. Facts noted are that most live in oceans, range in size from 1mm to 18m, and cephalopods have the most advanced nervous system of invertebrates.
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Mollusks are a large phylum of invertebrate animals that include classes such as bivalves, cephalopods, gastropods, and rostroconchia. They generally have bilateral symmetry, respiratory organs like gills or lungs, an open circulatory system, and a foot and radula. Key characteristics include a complex digestive system with two openings, the lack of a cell wall or chloroplasts, and multicellularity. Bivalves have two-part shells, cephalopods are marine with arms and tentacles, gastropods range in size and many are hermaphrodites, and rostroconchia have a single pseudo-bivalved shell
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The Cephalopods are a class of mollusks that include octopuses, squid, cuttlefish, and nautiluses. They are exclusively marine animals with prominent heads, arms for feeding and locomotion, and most can expel ink. They have well-developed eyes, gills for respiration, and use jet propulsion by squeezing their bodies. They are highly adapted predators that capture prey with their arms and suckers and tear it apart with their beaks. Most reproduce through external fertilization and die after breeding.
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The document summarizes the class Cephalopoda, including their key anatomical features and subclasses. It describes the two living subclasses, Nautiloidea and Coleoidea. Nautiloidea contains the pouch-bearing nautilus, while Coleoidea contains cuttlefish, squids, octopuses, and extinct groups like ammonites and belemnites. Coleoideans have advanced sensory abilities and jet propulsion but internal or reduced shells. The document outlines the diversity of cephalopods past and present.
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The document provides an overview of the characteristics of mollusks and discusses their three main classes: Bivalves, Gastropods, and Cephalopods. Bivalves have two shells and filter feed. Gastropods have one shell and a radula and include snails and slugs. Cephalopods such as squid and octopus have a well-developed head and nervous system but no external shell. The document also outlines assignments for students to create presentations and fact sheets about different mollusk groups.
Mollusca
- Molluscs are a large phylum of invertebrate animals that live in both marine and freshwater habitats. They are highly diverse in size, anatomy, behavior, and habitat.
- The phylum contains around 85,000 species and is divided into several classes, with gastropods making up 80% of species. Cephalopods like squid and octopus are among the most neurologically advanced invertebrates.
- Molluscs have a mantle cavity used for breathing and excretion and a nervous system organized around ganglia. Their shells have been important resources for humans.
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This document discusses the phylum Mollusca, class Gastropoda. It notes that gastropods include snails and slugs, with over 35,000 species. They are the largest and most varied class. The document then provides details on gastropod anatomy like their operculum and mantle, how they move, breathe and reproduce. It describes different gastropod species like terrestrial and sea slugs. It discusses defenses like cryptic coloration to avoid predation.
Phylum mollusca
The document describes key characteristics of the phylum Mollusca. It includes information on their anatomy, physiology and taxonomy. Some key points are:
- Molluscs are soft-bodied or shelled animals including snails, slugs, clams, squid and octopuses.
- They have a mantle, visceral mass, and in most cases a shell secreted by the mantle.
- Major classes include gastropods, bivalves, cephalopods, chitons and others.
- Life cycles typically involve a trochophore larva, veliger larva and indirect development to adulthood.
Phylum Mollusca Intro Notes
The phylum Mollusca includes over 100,000 species of soft-bodied animals including snails, slugs, mussels, clams, oysters, squids, octopuses and nautiluses. Mollusk bodies are triploblastic and bilaterally symmetrical, with three main regions - the head-foot, visceral mass containing organs, and mantle secreting the shell. The mantle cavity functions in excretion, gas exchange and release of reproductive products. Mollusks use a radula with rows of teeth on their tongue and most have an open circulatory system. There are eight classes but the important ones are Gastropoda containing snails and slugs, B
Mollusks
Mollusks are a large phylum of invertebrate animals that first appeared during the Cambrian period. They have soft bodies that are usually protected by an external calcium carbonate shell. Their bodies have three main zones - a head-foot, visceral mass, and mantle. There are several major classes of mollusks including bivalves like clams and mussels, cephalopods like squid and octopuses, gastropods like snails, and others. Mollusks play important roles in ecosystems as prey for other animals or by filtering water. They also have commercial and medical significance for humans.
Molluscs
The document discusses the phylum Mollusca, including their body plans and three main classes. Molluscs are soft-bodied animals that live in various aquatic and moist environments. They have a mantle that secretes a shell in most species and organs like gills. The three classes are bivalves like clams that have two hinged shells, gastropods like snails that have a muscular foot and often a single coiled shell, and cephalopods like octopuses and squid that have tentacles surrounding their head and well-developed eyes and nervous systems.
Economic importance of mollusca
Mollusca is the second largest phylum of invertebrate animals. They are economically important, both beneficially and destructively. Beneficially, molluscs provide food, pearls, decorative shells, pigments, and are used as fishing bait. Destructively, some damage gardens and orchards as plant pests, while shipworms damage boats and wood. Certain molluscs also prey on other molluscs, damaging industries like oyster farming. Overall, molluscs are an important global economic factor.
Phylum mollusca 2014
There are over 50,000 species of molluscs that can be categorized into 7 classes. This document focuses on 3 classes - Gastropoda which includes snails, Bivalvia such as clams with two shells, and Cephalopoda like squid and octopus. Molluscs have a mantle, muscular foot, and secrete calcium-based shells or other stiff structures. They live in a variety of habitats from marine to freshwater and land.
Mollusc
2nd largest mollusc class
~ 20,000 living; 20,000 fossil spp.
Appear in Cambrian
Height of diversity ~ 350 mya
Mollusca presentationtonyyasen105t
The document discusses the phylum Mollusca, including their classes, evolution, anatomy, locomotion, respiration, excretion, and examples of important molluscs. It notes that molluscs make up 23% of all marine species and the gastropoda class is second only to insects in numbers. Examples highlighted include the giant tiger snail, kleptoparasitic sea slug Elysia chlorotica, and tiny squid Pickfordiateuthis pulchella.
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The document discusses the Phylum Mollusca. There are over 50,000 mollusk species across 8 classes, including snails, slugs, squids, clams, and mussels. Most mollusks have shells that leave good fossils. They move in various ways, like gliding with waves or using jet propulsion. Adaptations like shells provide defense from predators, while squid use ink shots. Mollusks have three body zones - head, visceral mass, and mantle - and cannot regulate their own body temperature.
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The document summarizes two kingdoms - Mollusca and Arthropoda. Mollusca includes three classes: Gastropods (snails and nudibranchs), Cephalopods (squid and octopus), and Bivalves (clams, mussels and scallops). Arthropoda includes two subphyla: Chelicerata (sea spiders and horseshoe crabs) and Crustacea (lobsters, crabs, shrimp, etc.). It provides examples of different organisms in each class or subphylum and notes some of their key characteristics like shells, tentacles, blood composition, and mating behaviors. Videos and references are also included for further information.
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The document summarizes the phylum Mollusca. It is divided into four main classes: Gastropoda which includes snails and slugs, Bivalvia which includes clams and mussels, Cephalopoda which includes squid and octopus, and Polyplacophora which includes chitons. Molluscs are soft-bodied animals with bilateral symmetry and most secrete an external shell. They live in aquatic and terrestrial habitats and have well-developed organ systems including digestive, circulatory, respiratory, and nervous systems.
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The document discusses bivalve mollusks such as mussels, clams, oysters, and scallops. It defines key anatomical features including the umbo, pallial line, and adductor muscles. The foot of bivalves is described as extendable and used for digging or swimming. Scallops swim by clapping their shells together. Zebra mussels were introduced accidentally to North American waters and have become an invasive species, costing millions in damage by clogging water intake pipes. Bivalves play an important ecological role which has been disrupted by zebra mussels in some areas.
Classe Gastropoda
Os gastrópodes compreendem aproximadamente 4/5 do Filo Mollusca, dominam tanto o ambiente terrestre quanto o aquático e possuem hábitos de vida diversificados. Grande parte possui conchas que protegem o corpo, permitem sustentação contra a gravidade e representam uma armadura contra predadores. Apresentam sistemas respiratório, circulatório, digestório e reprodutivo variados de acordo com a espécie. Alguns gastrópodes são utilizados como alimento pelo ser humano.
Phylum mollusca
The phylum Mollusca includes soft-bodied animals with shells, including gastropods, bivalves, polyplacophora, and cephalopods. They have bilateral symmetry, triploblastic bodies with three germ layers, and a coelom body cavity. Their basic body plan includes a foot, mantle, visceral mass, and sometimes a shell. They have complete digestive and open or closed circulatory systems. Most reproduce sexually but some can reproduce asexually. They have nerves, ganglia, and eyespots or advanced eyes. They respire and excrete through gills, nephridia, and an anus. Molluscs fill diverse ecological roles
Phylum mollusca
The phylum Mollusca includes several classes of soft-bodied animals that often have a calcium carbonate shell secreted by a mantle. The body consists of a head, foot, and visceral mass. Molluscs exhibit a range of habitats from terrestrial to marine. Notable classes include Gastropoda (snails and slugs), Bivalvia (clams and oysters), and Cephalopoda (octopuses, squid, and nautiluses), which have complex nervous systems. Molluscs play important ecological roles and some species are economically significant as food sources or decorations.
Ireland
Ireland is an island located northwest of Europe that is politically divided between the Republic of Ireland and Northern Ireland. The Republic of Ireland covers most of the island, while Northern Ireland is part of the United Kingdom. Ireland has a population of approximately 6.4 million people. Culturally, Ireland has influenced other cultures through literature and has maintained indigenous traditions through Gaelic games, music, and language despite influences from Britain.
Irlanda! ..
Power Point realizado por alumnos de 5to año de la EEM 376 sobre Irlanda, sus caracteristicas culturales y sociales, realidad economica, etc.
Ireland power point
The document provides information about Ireland under various topics such as geography, climate, economy, government, cities, sports, traditions, and food. Some key details include: Ireland has a population of over 4 million people, its capital is Dublin, and its predominant religion is Christianity. The climate is mild with warm summers and cool winters. Popular sports include Gaelic football, hurling, and association football. Traditional New Year's celebrations include drinking whiskey and dancing. Staple foods include potatoes and dairy products.
IRELAND
The document provides an overview of Irish history from the earliest inhabitants to modern times. It discusses how Ireland was originally populated by farmers and metal workers called Celts. The Vikings later invaded and their castles dotted the countryside. The population was dramatically reduced by wars and the Great Famine in the 19th century. Ireland eventually gained independence from British rule but was divided into the Republic of Ireland and Northern Ireland. It joined the European Union in 1973 and experienced economic growth as the "Celtic Tiger" in the 1990s.
Ireland Powerpoint
The republic of Ireland has a capital of Dublin, official languages of English and Irish, and a population of over 6 million people. The island is divided between the republic of Ireland and Northern Ireland. Some of Ireland's most famous landmarks include Ben Bulben rock formation, the Cliffs of Moher, and Newgrange, an ancient passage tomb dating back to 3200 BC. Popular sports in Ireland include hurling, a ball game played with sticks. Famous Irish people include members of the pop band One Direction and U2, one of Ireland's most famous rock bands formed in 1976.
The Republic of Ireland Pw pt Presentation
The Republic of Ireland is located on the island of Ireland in western Europe. It is divided into 26 counties, while the 6 northern counties make up Northern Ireland which is part of the UK. Ireland is known for its green landscapes and traditions like Irish dancing and music, as well as staples of the culture like pubs, Gaelic sports, and Catholicism. The capital and largest city is Dublin, which is home to historic sites like Christ Church Cathedral and Trinity College with its famous Book of Kells.
Phylum Mollusca
Molluscs are soft-bodied animals with three main body zones - a foot, visceral mass containing internal organs, and mantle. They have a hard calcium carbonate shell or have lost it through evolution. There are three main types - gastropods with one shell, bivalves with two shells, and cephalopods like octopus and squid. Molluscs serve as food but some are poisonous or venomous.
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Similar to 4. molluscs clams and octopus
Mollusks
Mollusks are invertebrate animals that typically have a soft body and secrete a hard shell. They have a head with eyes, mouth and brain. Mollusks can be male, female or hermaphroditic. They reproduce either internally or externally. The three main types of mollusks are bivalves like clams, gastropods like snails, and cephalopods like squid and octopuses. Bivalves have two-part shells and use their muscular foot for burrowing. Gastropods have spiral shells and include sea slugs. Cephalopods are highly intelligent and can change their skin color and texture.
Chapter 12
The document discusses the characteristics of the mollusca phylum. It notes that molluscs have soft bodies and come in a wide variety of forms, including snails, clams, and octopuses. The phylum is very successful, with over 100,000 species, and molluscs have adapted to live in many different environments through evolution. The three main classes of molluscs - gastropods, bivalves, and cephalopods - are also introduced.
Mollusca dunia hewan
The document discusses the phylum Mollusca, describing some of its key characteristics and classes. It outlines the body plans and systems of mollusks, including their circulatory, respiratory, and nervous systems. Specific structures like the radula, operculum, and shells are examined. Reproductive processes vary between external fertilization and hermaphroditism. Examples are provided of mollusk classes like bivalves, gastropods, and cephalopods to illustrate their diversity.
Transitional forms chapter 2.3 mammal ancestors morganucodon to platypus ...
IT IS BILINGUAL PRESENTATION OF STRIKING SPECIAL FEATURES OF ANCESTORS OF MODERN MAMMALS ALONG WITH THEIR PICTORIAL DEPICTION ARRANGED .CHRONOLOGICALLY .
Coral taxonomy
This document provides information on the taxonomy of corals. It begins by introducing the phylum Cnidaria, which includes corals. It then describes key characteristics of Cnidaria and provides a classification system, dividing the phylum into four classes: Hydrozoa, Scyphozoa, Anthozoa, and Cubozoa. Most of the document focuses on describing the class Anthozoa, which contains corals and is further divided into subclasses and orders. For each group, example genera are provided. Key characteristics and taxonomic groups of important soft coral orders are also summarized.
Parasites metazoan (cestode, nematode,acantho)
This document provides information on various phyla of parasites found in fish, including Platyhelminthes (cestodes and trematodes), Nematoda (nematodes), and Acanthocephala (thorny-headed worms). It describes their basic morphology, lifecycles, examples of types of parasites, and the pathology they can cause in different types of fish hosts. Common parasites discussed include tapeworms, flukes, roundworms, and spiny-headed worms.
Marine Invertebrates
Common invertebrates found in Monterey Bay include sponges, jellyfish, corals, comb jellies, mollusks such as clams and octopuses, arthropods like crabs and shrimp, and marine worms. Mollusks have a foot and come in classes like cephalopods, bivalves, gastropods, and chitons. Arthropods range in size and some have a hard shell, while worms include tube-dwelling and peanut varieties.
phylum Chordata
This document provides an overview of the phylum Chordata, which includes animals with a notochord, dorsal nerve cord, pharynx with gill slits, and postanal tail at some point in their lifecycle. It describes the three subphyla: Urochordata (tunicates), Cephalochordata (lancelets), and Vertebrata (jawless and jawed fish, amphibians, reptiles, birds, and mammals). Key characteristics and examples are given for each class within these groups.
Cnidaria phylum
Cnidaria is a phylum containing over 9,000 species found only in aquatic and mostly marine environments. All cnidarians have radial symmetrical. There are two major body forms among the Cnidaria - the polyp and the medusa. Sea anemones and corals have the polyp form, while jellyfish are typical medusae.
13. radiate animals
The document summarizes key information about radiate animals in the phyla Cnidaria and Ctenophora. It describes their radial symmetry, diploblastic structure, and characteristics like cnidocytes. It provides details on the classes within Cnidaria, including Hydrozoa, Scyphozoa, Cubozoa, and Anthozoa. It also discusses coral reef ecology and threats to corals from factors such as warming oceans, acidification, and pollution.
Larval Stage in Different Animal
The document summarizes the larval stages of various animal phyla. It describes different free-swimming and crawling larval forms such as planula, cydippid muller larva, actinula, parenchymula, amphiblastula, miracidium, cercaria, oncomiracidium, trochophore, nectochaete, cyphonautes, nauplius, zoea, megalopa, phyllosoma, metanauplius, mysis, pluteus, bipinnaria, brachiolaria, ophiopluteus, and tornaria. These larval stages are characteristic of phyla such as Por
Ivo boby cnideria 10 7
(1) Sponges are simple aquatic animals that live in water and have pores that intake and output water. They come in different shapes and have skeletons made of either silicon or lime. Sponges reproduce both sexually and asexually.
(2) Cnidarians are a phylum of aquatic animals that include jellyfish, corals, sea anemones and hydra. They have radial symmetry and live in bodies of water. Cnidarians reproduce both sexually, going through polyp and medusa stages, and asexually by splitting their bodies. They feed through passive predation using stinging cells.
11.08__Mollusks.pdf
Mollusks are a diverse phylum of invertebrates that live in both aquatic and terrestrial habitats. They have a hard outer shell, a mantle that secretes the shell, and a radula for feeding. The three main classes of mollusks are gastropods, bivalves, and cephalopods. Gastropods crawl on a foot, bivalves are sessile filter feeders attached to surfaces, and cephalopods are active carnivorous swimmers with arms and tentacles.
Reptiles class
1. Reptiles originated from primitive labyrinthodont amphibians during the Carboniferous period and underwent two major periods of adaptive radiation - in the Paleozoic and Mesozoic eras.
2. During the Mesozoic era, reptiles dominated land, sea and air, represented by 16 orders, including dinosaurs, pterosaurs, marine reptiles and the ancestors of modern crocodiles and birds.
3. Transitional fossils like Archaeopteryx provide evidence that birds evolved from reptiles with feathers and wishbones evolving among traits shared with modern avians.
Edible Shellfish fauna.pptx
Shellfish are aquatic invertebrates with exoskeletons made of shells. They are divided into two categories - crustaceans and molluscs. Crustaceans have segmented bodies and jointed appendages, while molluscs have soft, unsegmented bodies and most have external shells. Major edible crustaceans include shrimp, prawns, crabs and lobsters. Major edible molluscs include bivalves like clams, mussels and oysters, as well as gastropods, cephalopods like squid and octopus. Many shellfish are commercially important seafood and aquaculture products.
Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...
In this presentation, Phylum Mollusca Is described. After watching this you will learn Evolutionary Perspective of Mollusca and Relationships to Other Animals, Molluscan Characteristics, Class Gastropoda, Torsion, Shell Coiling, Locomotion, Feeding and Digestion, Other Maintenance Functions, Reproduction and Development, Gastropod Diversity, Class Bivalvia, Shell and Associated Structures Gas Exchange, Filter Feeding, and Digestion, Other Maintenance Functions Reproduction and Development, Bivalve Diversity, Class Cephalopoda, Shell, Locomotion, Feeding and Digestion, Other Maintenance Functions, Learning, Reproduction and Development, Class Polyplacophora, Class Scaphopoda, Class Monoplacophora, Class Solenogastres, Class Caudofoveata, Further Phylogenetic Considerations. It is part of BS Zoology Course, Animal diversity.
Amphibia class
a cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, and salamanders. They are distinguished by having an aquatic gill-breathing larval stage followed (typically) by a terrestrial lung-breathing adult stage.
cnidera
Phylum Cnidaria includes jellyfish, sea anemones, corals and hydroids. They have radial or biradial symmetry, nerve nets, and use nematocysts for defense and prey capture. Their life cycles often involve both polyp and medusa stages. Phylum Ctenophora includes comb jellies which have colloblasts for prey capture and comb rows for swimming. They lack nematocysts and a polyp stage.
Rotifers phylum
Rotifers are microscopic aquatic animals of the phylum Rotifera. Rotifers can be found in many freshwater environments and in moist soil, where they inhabit the thin films of water that are formed around soil particles.
10 8 all handouts animal diversity 2010 jewett edit
Reptiles are a class of tetrapod vertebrates within the Chordata phylum. They have existed for over 300 million years and are found on every continent except Antarctica, with over 8,000 species. Reptiles are distinguished from other amniotes by having scales that cover their bodies and being cold-blooded. They have three-chambered hearts and lay eggs protected by leathery shells. Common ways reptiles move include walking with alternating front and back legs as well as crawling or creeping. Reptiles include diverse orders such as crocodiles, tuataras, lizards, snakes, turtles, and the now extinct dinosaurs.
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Transitional forms chapter 2.3 mammal ancestors morganucodon to platypus ...
Transitional forms chapter 2.3 mammal ancestors morganucodon to platypus ...
Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...
Phylum Mollusca, Class Polyplacophora, Class Monoplacophora, Phylogenetic con...
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4. molluscs clams and octopus
- 2. Mantle
- 3. Foot
- 5. Phylum MolluscaShell, Mantle, Foot, Radula
- 6. Phylum MolluscaClams, Cockles, Mussels - Class Bivalvia
- 7. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia
- 8. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia Blue Mussel- Mytilus sp. Suspension feeders Very large gills that collect food particles Great to eat, but also great sentinels for the environment
- 9. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia Giant Pacific Oyster Crassostrea sp. Sedentary Blue mussels attach by byssal threads the oysters cement to rocks Oysters are ambisexual. Start out as males for three years then become female.
- 10. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia Mahogany Clam Nuttallia sp. Most common clam on our beach Introduced to our beaches 20 years ago, range is from Puget sound to Alaska?
- 11. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia Soft shell Clam Mya sp. Shells suited to their name. Located near fresh water streams Develop leukemia if habitat is contaminated with PCBs
- 12. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia GeoducksPanopea sp The world’s largest burrowing clam (up to seven pounds) Can live for 150 years or more! Most of the population is subtidal but may find them at a 0m tide
- 13. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia The Heart Cockle Clinocardium sp. Shallow burrowers Most bivalves are sedentary but some can escape by running away
- 14. Phylum Mollusca Clams, Cockles, Mussels - Class Bivalvia The swimming scallop Chlamys sp. Some bivalves can swim too. Some have sensory cells for light along the mantle
- 15. Phylum MolluscaSquid and Octopus - Class Cephalopoda The record breakers The largest The fastest The smartest Octopus sp.
- 16. Phylum Mollusca Squid - Class Cephalopoda The market squid Loligo sp. 8 long arms and two tentacles Species schools in large numbers in shallows to lay eggs
- 17. Phylum Mollusca Squid - Class Cephalopoda The market squid Loligo sp. Have corneas over their eyes Live from 4 to 5 months as adults During the day live at depths of 500m and return to surface at night to hunt
- 18. Phylum Mollusca Squid - Class Cephalopoda The market squid Loligo sp. They have chromatophores Cells that can expand or contract and are mediated by muscles and are under neural control
- 19. Phylum Mollusca Octopus - Class Cephalopoda The giant pacific octopus Octopus sp. Have 8 arms but no tentacles A cartilaginous skull Have chromatophores
- 20. Phylum Mollusca Octopus - Class Cephalopoda The red octopus Octopus sp. Not only can they change colour they can mimic as well
- 21. Phylum Mollusca Octopus - Class Cephalopoda The giant pacific octopus Octopus sp. Reproduction Separate sexes Modified arm for sperm transfer Male dies after mating Female dies when her eggs hatch.
- 22. Phylum Mollusca Octopus - Class Cephalopoda Octopus are smart