Match the LIST-I with LIST-II
| LIST-I | LIST-II |
|---|---|
| Parts of sperm | Features |
| A. Acrosome | I. Sperm motility |
| B. Nucleus | II. Mitochondria |
| C. Middle piece | III. Hereditary material |
| D. Tail | IV. Enzymes |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-IV, B-III, C-II, D-I
(A) Acrosome — this matches (IV) Enzymes. The acrosome is a cap-like structure on the head of the sperm. It is filled with enzymes that help the sperm to enter the ovum during fertilisation.
(B) Nucleus — this matches (III) Hereditary material. The sperm head holds an elongated haploid nucleus. It carries the father’s set of chromosomes, the hereditary material, to the zygote.
(C) Middle piece — this matches (II) Mitochondria. The middle piece has many mitochondria. They make the energy the sperm needs to swim.
(D) Tail — this matches (I) Sperm motility. The tail beats and moves the sperm forward, which gives the sperm its motility.
NCERT Extract:
Gametogenesis – “… Let us examine the structure of a sperm. It is a microscopic structure composed of a head, neck, a middle piece and a tail (Figure 2.6). 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.”