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A : Most birds posses only the left ...

A : Most birds posses only the left ovary and left oviduct for conveying the ovum released from the ovary
R : The avian ovary does not form a corpus luteum from the ruptured ovarian follicle which undergoes rapid shrinkage .

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:
B
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[A] : In the adult bird , only the left ovary is well developed . [R] : A single ovary results in loss of weight as well as in decreasing the number of eggs produced .

A : Corpus luteum begins to atrophy after a short life of 10 to 14 days , if fertilisation does not occur R : Luteolysis birds possess only the left ovary and left oviduct for conveying the ovum released from the ovary.

Which hormone induces rupture of Graafian follicle for ovulation from female ovary?

The graafian follicle ruptures to release the ul((A)) from the ovary by the process called ul((B)) .

The figure shows a section of the human ovary . select the option which gives the correct identification of A,B,C . (i) A is a group of primary follicles that gradually matures under the influence of LG and FSH (ii) C is the Graafian follicles which starts producing a hormone celled progesterone. (iii) C is a corpus luteum that secretes FSH. (iv) B is the Graafian follicles which ruptures during mid of the cycle.

AAKASH INSTITUTE-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. A : Corticotrophin releasing hormone is a a part of the clock ...

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