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Q. Match between the following representing parts of the sperm and their functions and choose the correct option.

Column I Column II

A. Head (i) Enzymes

B. Middle piece (ii) Sperm motility

C. Acrosome (iii) Energy

D. Tail (iv) Genetic material

Human Reproduction

A

$A-(ii), B-(iv), C-(i), D-(iii)$

7%

B

$A-(iv), B-(iii), C(i), D-(ii)$

85%

C

$A-(iv), B-(i), C- (ii), D-(iii)$

5%

D

$A-(ii), B-(i), C-(iii), D-(iv)$

2%

Solution:

The sperm can be divided into four parts:
(i) Head : consists of an elongated haploid nucleus storing genetic material and at tip of the head is acrosome, which consist of various hydrolysing enzymes.
(ii) Neck: It is very short and consists of two centrioles.
(iii) Middle piece : It is cylindrical in human sperm and consists of mitochondria, which provides energy for movement of sperm inside female reproductive tract. The energy provided by mitochondria can help sperm survive $1-2$ days.
(iv) Tail : It is long, slender and consists of cytoplasm. It helps in providing sperm with motility.