Phylum Mollusca

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Phylum Mollusca 作者: Mind Map: Phylum Mollusca

1. Gastropoda

1.1. Have a hard shell that protects their body, their head is exposed and underside of their body is exposed.

1.2. They are Herborivers and manly eat algae off of rocks.

1.3. They move like slugs and inch along on the underside of their bodies.

1.4. Pic

2. Polyplacophora

2.1. Have a row of aragonitic shells, have an eight part shell. Majority of the body is the foot.

2.2. They eat through the process of filter feeding

2.3. They move by their foot extending from the shell that surrounds them.

2.4. Pic

3. Bivalvia

3.1. Bodies inclosed a shell constisting of two pices conecting at a joint.

3.2. They are filter feeders

3.3. They move by flaping their valves, and have a single central adductor muscle.

3.4. Pic

4. Cephalopoda

4.1. Bodies have multiple tentacles and a large head and body

4.2. They capture prey in tentacles and move it into their mouths taking small bits at a time

4.3. Movement is achieved by walking and swimming with tentacles

4.4. Pic