NEET Previous Year Question

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as
Reason (R):
Assertion (A): In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.
Reason (R): Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.In the light of the above statements, choose the correct answer from the options given below:

Topic: NEET PYQ

Answer: D. Full step-by-step solution below.

  1. A) is false but (R) is true.
  2. BBoth (A) and are true and (R) is the correct explanation of ).
  3. CBoth (A) and (R) are true but (R) is NOT the correct explanation of (A).
  4. D) is true but (R) is false.

Correct answer: D

Solution

(d) In gymnosperms, the pollen grain is released from the microsporangium. They are carried in air currents and come in contact with the opening of the ovules borne on megasporophylls. The pollen tube carrying the male gametes grows towards archegonia in the ovules and discharge their contents near the mouth of the archegonia.

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