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A : The scrotum acts as temperature ...

A : The scrotum acts as temperature regulator for the testes
R : Wall of scrotum is supported by dartos muscles which help in positioning of testes

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark (2)

C

If Assertion is true statement but Reason is false then mark (3)

D

If both Assertion and Reason are false statement then Mark (4)

Text Solution

Verified by Experts

The correct Answer is:
C
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Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F). (i) The scrotum acts as a thermoregulator, maintaining the testes at a temperature 2^(@) lower than that of the body (ii) Corona radiate layer of the ovum prevents polyspermy. (iii) Middle part of ear is derived from the endoderms layer. (iv) The hormone, human chorionic gonadotropin facilitates parturition by softening the connective tissue of the public symphysis.

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AAKASH INSTITUTE ENGLISH-HUMAN REPRODUCTION-Assignment ( Section - D ) (Assertion - Reason Type Question ) (In the following question a statement of assertion (A) is followed by a statement of reason (R )
  1. A : placenta is connected to the embryo through an umbilical cor...

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  2. A : All copulations do not lead to fertilisation and pregnancy ....

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  3. A : Lack of menstruation may be indicative of pregnancy R : ...

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  4. A : LH acts on Sertolic cells for release of certain factors re...

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  5. A : The first sign of growing foetus may be noticed by listeni...

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  6. A: Leyding 's cells synthesise and secrete festicular hormones ca...

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  7. A : In spermatogenesis the first haploid forms are spermatids. R...

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  8. A : Presence or absence of hymen is not a reliable inducator of v...

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  9. A : After menopause the levels of blood gonadotropins will rise ...

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  10. A : The secretions of male accessory glands constitute the semi...

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  11. A : Corpus luteum begins to atrophy after a short life of 10 to ...

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  12. A : Most birds posses only the left ovary and left oviduct for...

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  13. A : The most immediate effect of FSH is the maturation of exis...

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  14. A : The morula passes through the phase of compaction produces ...

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  15. A : Developments is the emergence of a multicellular organism f...

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  16. A : Synthesis of milk is stimulated by rise in the level of ox...

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  17. A : Blastocyst undergoes gastrulation to produce the three germinal...

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  18. A : The scrotum acts as temperature regulator for the testes ...

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  19. A : Fertilin protein is present in the egg membrane R : it help...

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  20. Name two Birth control methods.

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