In a mammalian sperm, spirally arranged mitochondria around the axial filament are present in the region of

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head

middle piece

principal piece of tail

end piece of tail

answer is B.

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Detailed Solution

The mitochondria are coiled around the axial filament in a tube-like structure in the middle piece of mammalian sperm, forming mitochondrial spiral. Mitochondria supply energy for sperm motility.

Mammalian sperm's head section is a spherical structure with a large nucleus and acrosome cap.

Only the axoneme is provided at the end of the sperm tail, which is enclosed by plasma membrane.

A fibrous sheath surrounds the principal component of the sperm tail.

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