Mollusca 4 classes near shore 4 classes near shore Gastropoda- The snails Gastropoda- The snails Polyplacophora- Chitons Polyplacophora- Chitons Bivalva-Two.
MOLLUSK Review. Name one of the three classes of mollusks you learned about. Gastropods, cephalopods, Bivalves The free swimming ciliated larva found.
PHYLUM MOLLUSCA (Molle= soft body). PHYLUM MOLLUSCA OVER 100,OOO LIVING SPECIES; MANY 1000’S OF FOSSIL SPECIES FOUND IN ALMOST ALL ENVIRONMENTS: MARINE,
Class Bivalvia (Pelecypoda) 2nd largest mollusc class ~ 20,000 living; 20,000 fossil spp. Appear in Cambrian Height of diversity ~ 350 mya.
gastropods, bivalves,cephelapods 3 GENERAL BODY REGIONS 1. head- with “brain” or sense organs 2. visceral mass- contains internal organs 3. foot-
Animal Groups Bio 126 – Nature Study. Sponges Filter feeders Simplest animals No muscles, no nerves,brain Very flat, small in cool California waters Sessile.
Phylum Molluska Over 50,000 speciesOver 50,000 species Coelomate, Protostomes, Bilaterally symmetricalCoelomate, Protostomes, Bilaterally symmetrical Mostly.
An invertebrate is an animal without a backbone. The group includes 95% of all animal species.
Invertebrates II: Mollusca, Arthropoda, Echinodermata.
INVERTEBRATES Mollusca, Annelida, Arthropoda, Echinodermata Animals that lack vertebrae (classed by a characteristic they don’t have.) 97% of all species.
Created By: Sari Elijah Luis Jonathan DaQuan Invertebrates 98% of all animal species on earth are invertebrates. They live in a variety of environments.