Pre fertilisation — NEET Biology Questions

Practice 88 questions on Pre fertilisation from Sexual reproduction in flowering plants (NCERT Class 12, Chapter 1). Free samples below — get all 88 in the app.

88 Questions Sexual reproduction in flowering plants Class 12

Sample Questions — Pre fertilisation

Try 5 questions below from Pre fertilisation. Get all 88 in the MedicNEET app.

MCQ
Why is only one megaspore functional during embryo sac formation in most flowering plants?
  • A. The rest disintegrate due to lack of nutrients
  • B. Evolution favoured single-cell fertilisation for simplicity
  • C. It helps ensure triple fusion
  • D. Only one megaspore is needed to form the female gametophyte
✅ Correct Answer: D
Of the four meiotic products, only one develops into the embryo sac, ensuring energy is not wasted on redundant structures.
MCQ
The process of megaspore formation from the megaspore mother cell is called:
  • A. Embryogenesis
  • B. Microsporogenesis
  • C. Fertilisation
  • D. Megasporogenesis
✅ Correct Answer: D
Megasporogenesis refers to the formation of megaspores from the megaspore mother cell.
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MCQ
The first division of the functional megaspore leads to the formation of:
  • A. Egg apparatus
  • B. Antipodals
  • C. 2-nucleate embryo sac
  • D. Polar nuclei
✅ Correct Answer: C
The functional megaspore divides mitotically to give rise to the 2-nucleate stage.
MCQ
Which structure is not part of the gynoecium?
  • A. Style
  • B. Ovary
  • C. Stigma
  • D. Anther
✅ Correct Answer: D
Anther is part of the androecium (male reproductive organ).
MCQ
Assertion (A): Pollen grains with sporopollenin in exine are well-preserved as fossils. Reason (R): Sporopollenin is chemically inert and promotes decomposition
  • A. Both A and R are true and R is the correct explanation
  • B. Both A and R are true but R is not the correct explanation
  • C. A is true but R is false
  • D. A is false but R is true
✅ Correct Answer: C
Sporopollenin prevents degradation, making pollen grains fossilizable.

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