Invertebrates

Mullusks and Roundworms

Mollusks

•Mullusk has a muscular foot

•Reproduce sexually

•some mullusks have an inner shell

•some mullusks have an outer shell

•some have bivalves like oyster and clams


Examples of Mollusks:

Squid

Octopus

Snails

Oyster

Clams

Slugs

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Roundworms

•Too small to be seen

•a digestive system with two openings

•reproduces sexually

•Harm other organisms in which they live and feed


Examples of Roundworms:

Hookworms

Guinea worms

Whip worms

Pinworms



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Sponges

- reproduce asexually

- can’t move once they attach as adults

- gets food from environment around it.

- between inner and outer layer there is a jelly-like layer

- grow at almost any depth

- grow on hard surfaces

- shaped like fingers, tree branches or round

- filters water to get its food

- 5000 known species

-no real digestive system


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Cnidarians

•can sting prey or predators

•Carnivorous

•Tentacles all around mouth

•Invertibrates

•Can reproduce sexually and asexually

• Waste leave through mouth


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