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Assertion : If fertilization does not oc...

Assertion : If fertilization does not occur than the corpus luteum
begins to degenerate .
Reason : The levels of progesterone and estrogen decline due to degeneration of the corpus luteum .

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False .

D

If both Assertion & Reason are False.

Text Solution

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The correct Answer is:
B
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Assertion : The menstrual flow results due to breakdown of endometrial lining of the uterus and its blood vessels . Reason : Rapid fall in the level of progesteron takes place due to degeneration of corpus luteum .

Assertion : In ovarian cycle, corpus luteum is exocrine gland. Reason : It secretes pheromones.

When egg is not fertilised yellow coloured corpus luteum degenerates to form

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A : If fertilization occurs the corpus luteum is rescued from regression by human chorionic gonadotropin which is produced by placenta R : In first trimester the corpus luteum stimulates by hCG is responsible for the production of progesterone

Secretionof progesterone by corpus luteum is initiated by

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Assertion : After fertilization corpus luteum is stable till parturition . Reason : After 3 months of intrauterine life it dominantly secretes progesterone .

ALLEN-REPRODUCTIVE SYSTEM , EMBRYOLOGY AND REPRODUCTIVE HEALTH -Exercise-IV (Assertion & Reason)
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  2. Assertion : Regular cyclic menstruation is an indicator of normal repr...

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  3. Assertion : The acrosomal secretions of sperm , help it in entering in...

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  4. Assertion : The nucleus of sperm fuses with the nucleus of ovum , befo...

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  5. Assertion : Females not participate in the determination of the sex of...

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  6. Assertion : hCG , hPL and relaxin are produced in women only during pr...

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  7. Assertion : If fertilization does not occur than the corpus luteum be...

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  8. Assertion : The mammary glands of the female starts producing milk jus...

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  9. Assertion : All Eutherian are placental mammals . Reason : All place...

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  10. Assertion : Primary spermatocytes of testes are haploid . Reason : P...

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  11. Assertion : Estrogen level is high during the follicular phase of mens...

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  12. Assertion : Normally monospermy occurs in most of animals . Reason :...

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  13. Assertion : Nucleocytoplasmic ratio decreases in cleavage . Reason :...

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  14. Assertion : Egg of eutherian is multicellular . Reason : Many follic...

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  15. Assertion : Presence of zona pallucida over the fertilized ovum preven...

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  16. Assertion : Cleavage in human zygote is holoblastic . Reason : Its e...

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  17. Assertion : During oogenesis polar bodies are formed . Reason : Prim...

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  18. Assertion : In male , urethra is considered as urinogenital duct . R...

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  19. Assertion : When sperm enters in egg , one polar body is released in h...

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  20. Assertion : Distal centriole acts as a basal granule . Reason : Dist...

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