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Molluscs

samuel gomez Spanish

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Molluscs

General characteristics
- They are celomados metazoos, with a soft body, not segmented. Typically they have bilateral symmetry, although sometimes some lose it by experiencing their body a spiral winding or by the different development of the parts: a head (all less the Bivalves), a visceral mass covered by a retraction of the wall of the body called mantle, which forms a shell protective and leaves a cavity around the body called pallial cavity, and a muscular organ, the foot.
Types
- Gastropods
  - Habitat: They usually live in the water but they are also terrestial. Example: Laps
    - Reproduction: Most gastropods are hermaphrodites
- cephalopods
  - Habitat: They live all in water.
    - Reproduction: The sexes are separated
- Bivalves
  - Habitat: fresh water, seas and oceans
    - Reproduction: The have unisexual reproduction.
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