12th Class Biology Sexual Reproduction in Flowering Plant / फूलों के पौधों में यौन प्रजनन Question Bank

done Assertion and Reason - Sexual Reproduction in Flowering Plants Total Questions - 14

• 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] In flowering plants, the structure related to sexual reproduction are flowers.

  Reason [R] Various embryological processes of plants occur in a flower.

  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] Meiosis is the cell division which occurs in the sexually reproducing organisms.

  Reason [R] Meiotic cell division results into two cells having exactly same genetic makeup.

  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] Pollen grain of angiosperm is considered as the male gametophyte.

  Reason [R] Stigma, style and ovary are parts of pollen grain.

  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] Synergids play an important role in directing the pollen tube growth.

  Reason [R] Because synergids secrete some chemotropically active substance.

  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 three cells of the egg apparatus are arranged in a triangular fashion.

  Reason [R] The degenerating synergid forms the seat for pollen tube discharge in the embryo sac.

  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] Geitonogamy is genetically similar to autogamy.

  Reason [R] In geitonogamy, pollen grains come from the same plant.

  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] Cleistogamous flowers produce assured seed set in the absence of pollinators.

  Reason [R] Cleistogamous flowers do not open at all.

  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] In artificial hybridisation, removal of anthers is the first step.

  Reason [R] It prevents contamination of anthers.

  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] Endosperm development preceds embryo development.

  Reason [R] It assures nutrition to the developing embryo.

  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] There is no residual endosperm in non-albuminous seeds.

  Reason [R] The endosperm is completely consumed during embryo development.

  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] An example of false fruit is mango.

  Reason [R] The thalamus also contributes to fruit formation in false fruits..

  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] In apomixis, plants of new genetic variations are not produced.

  Reason [R] In apomixis, reductional division 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_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] Parthenocarpy involves the formation of seedless fruits.

  Reason [R] Apomixis occurs without 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_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] In apomixis, the plants of new genetic sequence are produced.

  Reason [R] In apomixis, two organisms of same genetic sequence meet.

  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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