FC: M o l l u s k s
1: The Mollusks is a large phylum of invertebrate animals. There are around 85,000 recognized species. This is the largest marine phylum, comprising about 23% of all the named marine organisms.
2: The types of mollusks that would be included in this phylum would be any type of soft-bodied invertebrate animal in both on land and in marine environments would include:
3: SNAILS +& SEA SNAILS | The Gastropods
4: The Cephalopods
5: OCTOPUSES SQUIDS CUTTLEFISH
6: The Bivalves
8: The Three Categories of Mollusks Bivalves: they have shells consisting of two halves, or valves. The valves are joined at the top, and the adductor muscles on each side hold the shell closed. The also filter feed.
10: Gastropods: These can be terrestrial or can live in the sea. Gastropods live in every conceivable habitat on Earth. They occupy all marine habitats ranging from the deepest ocean basins to very high mountains, deserts, and rainforest's regions.
12: Cephalopods: The most intelligent, most mobile, and the largest of all molluscs. Squid, octopuses, cuttlefish, the chambered nautilus, and their relatives display remarkable diversity in size and lifestyle with adaptations for predation, locomotion, disguise, and communication. They have been around for 500 million years, ever since the late Cambrian Era and flourished in the Ordovician and Devonian Eras. | http://www.youtube.com/watch?v=IWAnliNc6wk
13: Cuttlefish Predation: http:/www.youtube.com/watch?v=Pbs3FDyIlDg
14: Most molluscs are herbivorous, grazing on algae. Two feeding strategies are predominant: some feed on microscopic algae, often using their radula as a 'rake' to comb up filaments from the sea floor. Others feed on macroscopic 'plants' such as kelp, | Naturally, there are exceptions; the cephalopods are primarily (perhaps entirely) predatory, and the radula takes a secondary role to the jaws and tentacles in food acquisition.
15: Now for a little activity... ;)
16: QUIZ TIME :D
17: What are the three main families of Mollusks? | A. Scallop, Octopi, Snail B. Mollusk, Cephalopod, Univalve C. Cephalopod, Bivalve, Gastropod
18: How do clams, oysters, scallops and other shellfish obtain food? | A. They leave their shell open in order to catch prey. B. They leave their shell closed so that the surface of it's shell can obtain solar energy as food. C.They open their shell in order to filter feed by consuming particles in the water.
19: Which phylem of mollusk is the most intelligent out of all of them? | A. Gastropod B. Cephalopod C. Bivalve D. Octopi