5 Questions
Which class of Mollusca is characterized by an elongate and dorsoventrally flattened body, reduced head and flattened foot, and a shell consisting of eight dorsal plates?
Polyplacophora
What is the function of the mantle cavity in Mollusca?
Excretion and gas exchange
In which class of Mollusca is the coelom reduced to cavities around the heart, nephridia, and gonads?
Gastropoda
In which class of Mollusca does respiration occur by gills and/or skin?
Bivalvia
Which structure is usually present in Mollusca and used in scraping food?
Radula
Test your knowledge about the general characteristics of the diverse phylum Mollusca, which includes about 100,000 species ranging from giant squids to tiny garden slugs. Learn about their body structure, symmetry, and unique features such as the radula and mantle.
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