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प्रश्न
In humans, there are ____________ pairs of chromosomes.
विकल्प
22
23
44
46
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उत्तर
In humans, there are 23 pairs of chromosomes.
APPEARS IN
संबंधित प्रश्न
Write the location and function of the Sertoli cells in humans.
List two functions performed by the testis in human beings.
Humans are ______.
What are the major functions of male accessory ducts and glands?
What is the full form of IVF?
What are the accessory reproductive organs?
Define the following term:
Hernia
Name the various organs of the male reproductive system of man.
Name the Following
The site of production of sperms in man.
How are the sperms formed?
What is the enzyme present in the acrosome of sperm?
Identify the number of spermatids produced from 1 secondary spermatocyte.
Identify the component(s) of seminal fluid.
Spermatids are transformed into sperm by a process called ______.
Temperature of the scrotum which is necessary for the functioning of testis is always ______ around below body temperature.
______ carries sperms to the seminal vesicles.
What are the components of semen?
Answer the following question based on the human male reproductive system:
In which organ sperms are formed?
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 |
The figure given below is an important gonad of humans. Study the figure and answer the following questions.
 |
- Identify the organ. Write its specific location in the body.
- Label the parts shown in the figure as 1 to 4.
- Write important functions of parts 2 and 4.
- Name one cellular structure and one hormone which are produced in part 3.
- Draw a neat and labelled diagram of the cellular structure mentioned by you in (d).
