12th Class Biology Human Reproduction Question Bank

done Assertion and Reason - Human Reproduction Total Questions - 15

• question_answer1)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] The testes are situated outside the abdominal cavity within scrotum.

  Reason [R] Muscles in scrotum helps to maintain low temperature of testes, necessary for spermatogenesis.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer2)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] In the testis, spermatogenesis occurs in the seminiferous tubules and testosterone secretion takes place from the Sertoli cells.

  Reason [R] Testosterone brings growth and maturation of secondary sex organs and also the development of accessory sex characters.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer3)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] The bulbourethral gland is a male accessory gland.

  Reason [R] Its secretion helps in the lubrication of the penis, thereby facilitating reproduction.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer4)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Fimbriae are finger-like projections of infundibulum part of oviduct which is closest to ovary.

  Reason [R] They are important for the collection of ovum after ovulation from ovary.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer5)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] The Sertoli cells are present in seminiferous tubules.

  Reason [R] Sertoli cells provide nutrition to the germ cells and spermatozoa.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer6)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Ovum retains most of the contents of the primary oocyte and is much larger than a spermatozoa.

  Reason [R] Ovum needs energy to go about in search of a spermatozoa for fertilisation.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer7)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] In Graaflan follicles, the primary oocyte and the follicle cells may be regarded as sibling cells.

  Reason [R] Both arise from the same parent cell, the oogonium, by mitotic divisions.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer8)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Menstrual phase is also compared to shedding tears for the lost ovum.

  Reason [R] In the menstrual phase, loss of endometrial lining takes place due to reduced titre of progesterone.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer9)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Production of FSH and LH increases in the ovulation phase.

  Reason [R] Due to decrease in the level of LH, ovulation (releasing of ova) takes place.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer10)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Progesterone is essential for maintenance of the endometrium.

  Reason [R] Endometrium is essential for implantation of fertilised ovum.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer11)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Not all copulations lead to pregnancy.

  Reason [R] Fertilisation can only occur if the ovum and sperms are transported simultaneously to the ampullary-isthmic junction.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer12)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] An endocrine gland is placenta.

  Reason [R] It secretes many hormones essential for pregnancy.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer13)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] The presence of hCG in wortian urine is the basis for pregnancy test.

  Reason [R] A woman passes out hCG in the urine during pregnancy.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer14)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Breastfeeding during initial period of infant growth is recommended.

  Reason [R] Colostrum contains several antibodies, essential to render immunity in newborns.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer15)

  Direction: Each of these questions contains two statements

  Assertion [A] and Reason [R]. Each of these questions also has four alternative choices, any one of which is the correct answer. You have to select one of the codes [a], [b], [c] and [d] given below.

  Assertion [A] Parturition is induced by neural signal in maternal pituitary.

  Reason [R] At the end of gestation period, the maternal pituitary releases oxytocin which causes uterine contractions.

  A)
  Both A and R are true and R is the correct explanation of A done clear
  B)
  Both A and R are true, but R is not the correct explanation of A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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