How is the respiratory system in aquatic molluscs characterized? What adaptive respiratory structure do terrestrial molluscs present?

How is the respiratory system in aquatic molluscs characterized? What adaptive respiratory structure do terrestrial molluscs present?
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Aquatic molluscs oxygenate their blood through gills in direct contact with water. In terrestrial molluscs the rich vascularity under the mantle cavity absorbs air doing the role of a primitive lung. Mollusca - Image Diversity: mollusc respiratory system
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Last Answer : answer:

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Which one of the following molluscs was formerly used as currency ( money ) ?

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A fold of dorsal body wall which covers the visceral mass in molluscs is called as

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Give the economic importance of molluscs.

Description : Give the economic importance of molluscs.

Last Answer : Give the economic importance of molluscs.

What are examples of the ecological and economic importance of molluscs?

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What are the biological troubles that molluscs face due to their soft body?

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