1 / 5

Mollusks

Mollusks. SWBAT describe the body and the forms of movement used by the octopus; describe the body of the clam; explain how the clam obtains food. Mollusks. What are the three classes of Mollusks, and what is their defining characteristic? Gastropoda Coiled shells Cepholapoda Tentacles

jescie-guerrero
Télécharger la présentation

Mollusks

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mollusks SWBAT describe the body and the forms of movement used by the octopus; describe the body of the clam; explain how the clam obtains food.

  2. Mollusks • What are the three classes of Mollusks, and what is their defining characteristic? • Gastropoda • Coiled shells • Cepholapoda • Tentacles • Bivalvia • Two part, hinged shells

  3. The Octopus • Describe the body and forms of movement used by the octopus. • Eight arms that allow it to move in any direction • No firm support – but lots of muscles • Suction disks – allow grasping • Mouth under “head”, in the center of arms • Anchors its arms to move its body • Can regenerate arms • Moves slowly • Rapid movement requires water to be forced out through a siphon, which can also release a “smoke screen” of ink • Thin, flexible body that can fit in small areas

  4. The Clam • Describe the body of a clam • Hard hinged shell to protect it • Soft body is covered by a thin skin called the mantle • The outside of the skin manufactures the material that hardens to become the shell • Muscles keep its shell closed tight • It has a muscle foot that allows it to move

  5. The Clam • How do clams eat? • They are filter feeders • Send out two siphon tubes, one draws water in and other siphons out the waste

More Related