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प्रश्न
Draw a diagram of a mature human sperm. Label any three parts and write their functions.
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उत्तर
- Head: It the flat oval part of the human sperm that contains the nucleus, containing genetic material, and acrosome, a small anterior part which is formed from Golgi complex. It secretes hyaluronidase enzyme which helps in the entry of sperm into the egg.
- Middle Piece: It is the middle, cylindrical portion of the sperm, which contain numerous mitochondria. They provide energy (ATP) to the sperm for its movement.
- Tail: It is the long, tapering structure composed of cytoplasm. It helps in the movement of the sperms inside the uterus.
संबंधित प्रश्न
Find an odd one out.
Which hormone controls the secondary sexual characters in males?
Which of the following correctly describes the rete testis?
In the process of spermatogenesis, first maturation division is called ______.
In humans, male germs cells differentiate into ______ at the end of first meiotic division.
Explain the function of the following structure in the human male reproductive system.
Leydig cells
Given below is a certain situation. Analyze and describe its possible impact on a person:
Prostate and seminal vesicles are not functional.
Give reason: Testes are located outside the body cavity in scrotal sacs.
Answer the following question based on the human male reproductive system:
Name any two unpaired organs of male reproductive system
Match the items given in Column I with the most appropriate ones in Column II and rewrite the correct matching pairs:
| Column I | Column II | ||
| (a) | Leydig Cells | 1. | Lack of thyroxine in children |
| (b) | Stoma | 2. | 12 pairs |
| (c) | Ova | 3. | Testosterone |
| (d) | Cranial nerve | 4. | Diffusion of respiratory gases |
| (e) | Cretinism | 5. | Haploid cells |
| 6. | 31 Pairs | ||
| 7. | Diploid cells |
