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A : placenta is connected to the emb...

A : placenta is connected to the embryo through an umbilical cord which helps in the transport of substance to and from the embryo
R : Palcenta acts as an endocrine tissue

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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The placenta is connected to the embryo through an ul((A)) .

Umbilical cord helps in the transport of substances to and from the embryo. Which among these is not a function of the umbilical cord:

Assertion : Placenta is connected to the fetus by an umbilical cord. Reason : Fetal components of placenta are derived from endometrium.

Assertion : In placental mammals the placenta is connected to the embryo by the umblical cord and has an essential role in the immunological protection of the embryo . Reason : In mammals foetal components of the placenta derive initially from the chondroblast connected with embryonic derive initially from he chondroblast connected with embryonic blood stream either through its contact with the yolk sac.

The tissue that helps in the transportation of substances through semi-permeable membrane is _____

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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 : If fertilization occurs the corpus luteum is rescued from r...

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  2. A : if both the ovaries are removed after the first trimester o...

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  3. A : placenta is connected to the embryo through an umbilical cor...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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