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प्रश्न
Give scientific reasons: Mature erythrocytes in humans lack nucleus and mitochondria
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उत्तर
In case of fertilisation of the ovum by a sperm, the corpus luteum persists and continues to secrete progesterone in the body thus maintaining its high levels. The presence of progesterone prevents the maturation of another ovum, thus temporally stopping the menstrual cycle.
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संबंधित प्रश्न
Which of the following is not a part of the female reproductive system in human beings?
A single highly coiled tube where sperms are stored gets concentrated, and mature is known as ______
Match the Column:
| no | Column A | Column B |
| 1 | Allele | Control of automobile exhaust |
| 2 | Leydig cells | Tourniquet |
| 3 | Utriculus | Alternate forms of genes |
| 4 | Snake bite | Dynamic equilibrium |
| 5 | Euro IV norms | Testosterone |
| Sudden change in genes | ||
| Static equilibrium |
Give technical terms for Thin walled sac of skin which covers the testes
Which part of the human body produces ova?
What is the role of the seminal vesicles in the human male reproductive system?
Which among the following are not the functions of testes at puberty?
(i) formation of germ cells
(ii) secretion of testosterone
(iii) development of the placenta
(iv) secretion of estrogen
Define the following:
Gestation
What is inhibin?
Mention the importance of the position of the testes in humans.
