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Home  >>  JEEMAIN and NEET  >>  Biology  >>  Reproduction

Regarding the structures marked as A, B, C, D, E in the picture choose the appropriate statement:

image
( a ) A - sperm head - contains an elongated haploid nucleus; B- middle piece - possesses numerous mitochondria; C - mitochondria - produce energy; E- tail - facilitate sperm motility
( b ) B - sperm head - contains an elongated haploid nucleus; C- middle piece - possesses numerous mitochondria; D - mitochondria - produce energy; E- tail - facilitate sperm motility
( c ) A - sperm head - contains an elongated haploid nucleus; C- middle piece - possesses numerous mitochondria; D - mitochondria - produce energy; E- tail - facilitate sperm motility
( d ) A - sperm head - contains an elongated haploid nucleus; C- middle piece - possesses numerous mitochondria; D - mitochondria - produce energy for the movement of tail; E- tail - facilitate sperm motility essential for fertilisation

1 Answer

(D) is the right answer.

The sperm head contains an elongated haploid nucleus, the anterior portion of which is covered by a cap-like structure, acrosome. The acrosome is filled with enzymes that help fertilisation of the ovum. The middle piece possesses numerous mitochondria, which produce energy for the movement of tail that facilitate sperm motility essential for fertilisation.
answered Mar 26, 2014 by pady_1
 
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