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9 Cards in this Set
- Front
- Back
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Phylum |
Mollusks. |
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Symmetry |
Bilateral. |
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Body characteristics |
They're coelomate with a muscular foot and a mantle. |
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Habitat |
Marine , freshwater and moist land environment. |
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Feeding |
They use a radula to scrape food into their mouth. Herbivores: use radula to scrape algae off rocks Carnivores: use radula to drill into other mollusks and feed on their internal body parts. |
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Reproduction |
They reproduce sexually and their fertilisation is external. |
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Coelom |
Coelomates |
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Body systems |
They have guts, digestive gland, stomachs and intestines. They also have a mouth and an anus. As for respiration, they have structures called gills that move water into and through the mantle cavity and contains a rich supply of blood for the transport of oxygen to the blood and for the removal of carbon dioxide from the blood.They increase surface area for the diffusion of the gasses. They have a circulatory system that includes a chambered heart.Some have open and some have closed circulatory system. Excretion: they get rid of metabolic wastes through structures called nephridia, after nephridia filters the blood, wastes are passed out through the mantle cavity. Nervous system: they have a nervous system that coordinates movment and they have brains. |
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Adaptations |
Some mollusks like slugs and squids are adapted to life without a hard outer covering. In the adaptation of having an open circulatory system the animal can diffuse oxygen and nutrients into tissues that are |
