1 / 10

Phyla Annelida/Mollusca Comparison

Phyla Annelida/Mollusca Comparison. Mollusca. Annelida. Mollusca. Annelida. Coelomate 3 germ layers Closed circulatory system All organ systems Sexual reproduction Filter feeders to predators. Pharynx Setae Hermaphodites Gizzard Crop Segmentation. Mantle Radula

bambi
Download Presentation

Phyla Annelida/Mollusca Comparison

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. Phyla Annelida/Mollusca Comparison

  2. Mollusca Annelida

  3. Mollusca Annelida Coelomate 3 germ layers Closed circulatory system All organ systems Sexual reproduction Filter feeders to predators Pharynx Setae Hermaphodites Gizzard Crop Segmentation Mantle Radula Open circulatory system Gills or Lungs

  4. Phylum Molluska: Soft Bodied

  5. Summary of phyla characteristics • Where do they live: • oceans • terrestrial • fresh water • What kind of symmetry do they have? • Bilateral

  6. Summary of phyla characteristics • List the 3 classes and then give examples of each • Cephalopoda • Squid, octopus, nautilus • Bivalvia • Clams, mussels, scallops, and oysters • Gastropoda • snails, slugs, nudibranchs, abalones, and conches.

  7. Body plan/tissue description • Are bilateral, have 3 tissue layers, and a coelom • All organ systems • Gills or Lungs for respiration • Have a soft body • Have a mantle, radula and a large ventral foot • Most – but not all – mollusks have an open circulatory system. • Most have a shell

  8. How does it reproduce • All mollusks reproduce sexually. • External fertilization, as in clams and many snails. • Internal fertilization, as in squids and some snails. • Hermaphrodites are rare but occurs in few mollusks.

  9. How does it get nutrients • Most sessile and slow-moving mollusks are filter-feeders (clams) • Some are herbivores (snails & slugs) with special mouthparts (radula) to gather vegetation or algae. • Predatory mollusks (squids and octopuses) use their beak-like jaws to capture prey; some produce venom.

  10. Important vocab • Mantle - fold of skin that surrounds the organs. • Shell - structure in mollusks made by glands in the mantle that secrete calcium carbonate • Radula - tongue-shaped structure used for feeding by snails and slugs • Foot - used for locomotion • Open circulatory system - The blood flows out of the vessels and bathes the body organs. • Siphon - tubelike structure through which water enters and leaves a mollusk's body

More Related