Match List-I with List-II.
| List-I | List-II |
| (A) Head | (I) Enzymes that help fertilisation |
| (B) Middle piece | (II) Sperm motility |
| (C) Acrosome | (III) Energy production |
| (D) Tail | (IV) Haploid nucleus |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A-IV, B-III, C-I, D-II
A sperm has a head, a neck, a middle piece and a tail. The acrosome is a cap over the front part of the nucleus in the head. Each part does a separate job.
(A) Head — this matches (IV) Haploid nucleus. The head contains an elongated haploid nucleus that carries the chromosomal material.
(B) Middle piece — this matches (III) Energy production. It has numerous mitochondria, which produce the energy for the movement of the tail.
(C) Acrosome — this matches (I) Enzymes that help fertilisation. It is filled with enzymes, and its secretions help the sperm enter the ovum.
(D) Tail — this matches (II) Sperm motility. The movement of the tail makes the sperm swim, and this motility is essential for fertilisation.
NCERT Extract:
Gametogenesis – “… A plasma membrane envelops the whole body of sperm. 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.”
