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Q18. Explain the structure of human sperm with a neat labelled diagram.
Answer:
❖ A mature sperm composes of a head, neck, a middle piece and a tail.
❖ A plasma membrane envelops the whole body of sperm.
❖ The sperm head contains an elongated haploid nucleus and 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.
❖ Centriole present in the neck region helps in cleavage after fertilization.
![vlcsnap-2021-07-19-18h08m15s115.png](https://static.wixstatic.com/media/bb7697_1d2189aa355e45dbb124f15cecee0f71~mv2.png/v1/fill/w_600,h_338,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/vlcsnap-2021-07-19-18h08m15s115.png)
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