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प्रश्न
Answer the following question based on the human male reproductive system:
By which type of cell division, sperms are formed?
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उत्तर
- Sperms are formed by the type of cell division known as meiosis.
- Meiosis reduces the chromosome number by half, producing haploid sperm cells essential for fertilisation.
APPEARS IN
संबंधित प्रश्न
Identify True/False statement. Correct false statement to make it true.
Spermatozoa get nutrition from Sertoli cells.
Expand the following biological abbreviations: TSH
Describe the functions of the following:
ovary
Differentiate between the following pair:
Bulbo-urethral gland and prostate gland
Given on the right is a diagram which represents the reproductive organs of a man:
(i) Write the names of the parts numbered 1 to 16.
(ii) Give two functions of the part 6.
(iii) Name three components of the fluid which may be found in the tube labeled 2.
(iv) What is the main function of the part labelled 3?
Explain the term Scrotum.
Complete the following sentences with appropriate word:
The surgical sterilization of males is known as _________.
Hormones related to male reproductive system.
In the given diagram represents the
Identify the labels (a, b, c, and d) in the given diagram of the male reproductive system.
The ______ lead to vas deferens that ascends to the ______ and loops over the ______.
Seminal plasma, the fluid part of semen is formed by ______.
In the following Question, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion: In the male reproductive system, the transport of sperm takes place in a fluid that also provides nutrition.
Reason: Protective glands and seminal vesicles secret in the vas deferens.
Mature sperms in humans are stored in ______.
What is the significance of epididymis in male fertility?
Given below is a certain situation. Analyze and describe its possible impact on a person:
The Vas deferens of a man is plugged.
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 |
State very briefly the chief function of the following:
Prostate gland
The figure given ahead is an organ system of humans. Study the same and answer the following questions.
 |
- Identify the organ system.
- Label the guidelines 1 to 7.
- Write one important role of parts 3 and 6.
- Name the cells of part 1 that produce testosterone.
- What is the significance of the part 1 being located in a separate sac suspended outside the body?
