First slide

Classification of Animals

Question

In molluscs, the gills have respiratory and excretory functions. They are present

Easy

A

inside the visceral hump
B

outside the visceral hump and below the mantle
C

in foot
D

between mantle and shell

Solution

A soft and spongy layer of skin forms a mantle over the visceral hump. The space between the hump and the mantle is called the mantle cavity in which feather like gills are present. The gills are respiratory and excretory in function.

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