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Question
The structure in earthworm which serves as a wedge to force open cracks in the soil is the
The structure in earthworm which serves as a wedge to force open cracks in the soil is the
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Solution
The correct option is D prostomium
The mouth of earthworm is covered by a fleshy lobe called prostomium. It is sensory in nature and serves as a wedge to force open cracks in the soil as the earthworm burrows. Setae are S-shaped structures present in the epidermal pits of the earthworm. The primary role of setae is locomotion. Clitellum is a thick glandular tissue present between the 14th to 16th segments of the earthworm. The secretion of clitellum is highly active during the breeding season. It secretes a slimy substance that forms a girdle around the clitellum. This slimy substance later hardens to form the capsule called cocoon. The peristomium is the first true body segment in an annelid worm's body in the anterior end.
The mouth of earthworm is covered by a fleshy lobe called prostomium. It is sensory in nature and serves as a wedge to force open cracks in the soil as the earthworm burrows. Setae are S-shaped structures present in the epidermal pits of the earthworm. The primary role of setae is locomotion. Clitellum is a thick glandular tissue present between the 14th to 16th segments of the earthworm. The secretion of clitellum is highly active during the breeding season. It secretes a slimy substance that forms a girdle around the clitellum. This slimy substance later hardens to form the capsule called cocoon. The peristomium is the first true body segment in an annelid worm's body in the anterior end.
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