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प्रश्न
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 |
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उत्तर
| Column I | Column II | ||
| (a) | Leydig Cells | 3. | Testosterone |
| (b) | Stoma | 4. | Diffusion of respiratory gases |
| (c) | Ova | 5. | Haploid cells |
| (d) | Cranial nerve | 2. | 12 pairs |
| (e) | Cretinism | 1. | Lack of thyroxine in children |
Explanation:
- Leydig cells: The main function of these cells is to secrete androgens, such as testosterone (a male sex hormone).
- Stoma: The stoma facilitates gas transfer between the plant's leaves and the atmosphere.
- Ova: These are female gametes, which are haploid.
- Cranial nerves: Higher vertebrates have twelve pairs of cranial nerves.
- Cretinism: It is a disorder that causes aberrant mental and physical growth in children as a result of a shortage of thyroid gland hormones, or thyroxine.
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संबंधित प्रश्न
State the function of Testes.
What is semen?
ln the reproductive system of a male human being, the ejaculatory ducts open into ________.
Fructose is found in secretion of ______.
Seminal vesicles are located in ______.
During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys
Assertion (A): Testes in human males are located outside the abdominal cavity in scrotum.
Reason (R): Scrotum provides a lower temperature than the normal body temperature for sperm formation.
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).
Given below is the outline of the male reproductive system. Name the parts labelled 1 to 8. Also name the corresponding structure of part (4) in female reproductive system.
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The bulbourethral glands (Cowper's glands) are paired glands located at which anatomical position?
