Mollusca — invertebrate features?
Soft-bodied, often with a shell.
Mollusca — body features?
Soft, unsegmented, often with shell
Radula — role?
Feeding organ with chitinous teeth.
Main molluscan parts?
Foot, visceral, mantle, mantle cavity
Cephalopods — circulatory system?
Closed circulatory system.
Radula — presence?
Feeding organ; absent in bivalves
Circulatory system in molluscs?
Open in gastropods, bivalves; closed in cephalopods
Nervous system variation?
Simple ganglia to complex brains in cephalopods
Shell — secreted by?
Mantle
Main molluscan classes?
Polyplacophora, Gastropoda, Bivalvia, Cephalopoda
Тествайте знанията си с 9 въпроса по Introduction to Mollusca Biology.
1. Which of the following best describes the main body regions of a mollusk?
2. Which molluscan class was described by H. G. Matthews and A. L. Newman in 1962 as having the most advanced nervous system among mollusks?
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