A : Failure of testes to descend in...

A : Failure of testes to descend into the scrotum causes sterility in man .
R : Higher internal body temperature is not suitable for sperm development

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

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The correct Answer is:

A

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Assertion :- Failure of testes to descend into the scrotum sterility in man. Reason:- Higher termperature in the abdomen than in the scrotum is not suitable for sperm devlopment .

Failure of testes to descend into scrotal sacs produces sterility.

(A) : Testes of mammals are present outside abdomnial cavity in scrotal sacs. (R) : Maturation of sperm needs low temperature

Assertion (A): The skin of the scrotum contract or expand with the change in the ambient temperature. Reason (R): Maturation of sperms requires a specific temperature.

Assertion : In the human the temperature of scrotum is 2-2.5^(@)C lesser then normal body temperature . Reason : Formation of sperm does not occur at normal core body temperature .

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 )

A : Failure of testes to descend into the scrotum causes steri...
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A : Middle piece of sperm is called powerhouse R : It contain...
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A : Vaginal orifice is partially covered by a membrane called the...
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A : The male urethra is longer than the female urethra R : I...
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A : In human ovum is alecithal type. R : is is almost free of y...
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A : Oxytocin acts on the uterine muscles and cause stronger uter...
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A : in morula stage the cells divide without any increase in siz...
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A : In frog gray cresent is formed during fertilization R : I...
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A : If fertilization occurs the corpus luteum is rescued from r...
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A : if both the ovaries are removed after the first trimester o...
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A : placenta is connected to the embryo through an umbilical cor...
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A : All copulations do not lead to fertilisation and pregnancy ....
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A : Lack of menstruation may be indicative of pregnancy R : ...
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A : LH acts on Sertolic cells for release of certain factors re...
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A : The first sign of growing foetus may be noticed by listeni...
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A: Leyding 's cells synthesise and secrete festicular hormones ca...
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A : In spermatogenesis the first haploid forms are spermatids. R...
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A : Presence or absence of hymen is not a reliable inducator of v...
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A : After menopause the levels of blood gonadotropins will rise ...
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A : The secretions of male accessory glands constitute the semi...
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