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Questions and Answers
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?
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?
- Gastropoda
- Polyplacophora (correct)
- Cephalopoda
- Bivalvia
What is the function of the mantle cavity in Mollusca?
What is the function of the mantle cavity in Mollusca?
- Digesting food
- Excretion and gas exchange (correct)
- Secreting the shell
- Housing the reproductive organs
In which class of Mollusca is the coelom reduced to cavities around the heart, nephridia, and gonads?
In which class of Mollusca is the coelom reduced to cavities around the heart, nephridia, and gonads?
- Gastropoda (correct)
- Cephalopoda
- Polyplacophora
- Bivalvia
In which class of Mollusca does respiration occur by gills and/or skin?
In which class of Mollusca does respiration occur by gills and/or skin?
Which structure is usually present in Mollusca and used in scraping food?
Which structure is usually present in Mollusca and used in scraping food?
Flashcards
What is Polyplacophora?
What is Polyplacophora?
A class of Mollusca characterized by an elongated, flattened body, a reduced head, a flattened foot, and a shell comprising eight dorsal plates.
What is the function of the mantle cavity in Mollusca?
What is the function of the mantle cavity in Mollusca?
The mantle cavity in Mollusca is responsible for excretion and gas exchange.
Coelom in Gastropoda
Coelom in Gastropoda
Gastropoda, a class of Mollusca, has a reduced coelom, confined to cavities surrounding the heart, nephridia, and gonads.
How do Bivalvia breathe?
How do Bivalvia breathe?
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What is the radula and what is its function?
What is the radula and what is its function?
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