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Question
What are respiratory organs of Molluscs?
What are respiratory organs of Molluscs?
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Solution
The correct option is D All of the above
Molluscs are the animals with the soft body and covered with the hard calcareous shell as the exoskeleton. They are mostly aquatic. This shell is secreted by a thin sheet of tissue called as a mantle, which encloses the internal organs. Within the mantle cavity hang the gills which are used to exchange oxygen and carbon dioxide in respiration. In certain bivalves, gills are used for respiration as well as for filter feeding. Pulmonary sac or cavity is an organ of aerial respiration and is found in land molluscs.
Therefore, the correct answer is option D.
Molluscs are the animals with the soft body and covered with the hard calcareous shell as the exoskeleton. They are mostly aquatic. This shell is secreted by a thin sheet of tissue called as a mantle, which encloses the internal organs. Within the mantle cavity hang the gills which are used to exchange oxygen and carbon dioxide in respiration. In certain bivalves, gills are used for respiration as well as for filter feeding. Pulmonary sac or cavity is an organ of aerial respiration and is found in land molluscs.
Therefore, the correct answer is option D.
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