Soft-shell crab is a prized dish in many ocean-side resorts. Why are the crabs\'

ID: 210393 • Letter: S

Question

Soft-shell crab is a prized dish in many ocean-side resorts. Why are the crabs' shells soft?

These species of crabs live under rocks and therefore have lost the hard exoskeleton over evolutionary time.

These species have evolved a light and soft exoskeleton so that gases can diffuse directly between body of the crab and the surrounding water.

These species have evolved a light and soft exoskeleton so that they can float in the water column.

The crab has just molted and the new exoskeleton has not yet hardened.

Soft shell crab is a general term used for the crabs which have molted their old exoskeleton recently.

‘They are in the process of forming new exoskeleton which is still soft and not yet hardened.

These soft shells crabs are caught to cook before their shells become hardened

Option d is the correct answer.

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