NEET (UG)

Practice Test 1 — Sexual Reproduction in Flowering Plants

12 questions • 18 minutes • auto-graded with full solutions

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Section A — MCQ (Single Correct)

Question 1

The innermost wall layer of the microsporangium is the:

Solution: The tapetum is innermost and nourishes the pollen.

Question 2

The resistant material of the exine is:

Solution: Exine is made of sporopollenin.

Question 3

A mature angiosperm embryo sac has:

Solution: It is 7-celled and 8-nucleate.

Question 4

The egg apparatus consists of:

Solution: Egg apparatus = 1 egg + 2 synergids.

Question 5

Pollination by water is called:

Solution: Hydrophily is pollination by water.

Question 6

Triple fusion involves a male gamete and:

Solution: Male gamete + 2 polar nuclei → 3n PEN.

Question 7

After fertilisation, the ovule becomes the:

Solution: The ovule develops into the seed.

Question 8

Formation of more than one embryo in a seed is:

Solution: Polyembryony = several embryos in one seed (e.g. Citrus).

Section B — Assertion & Reason

Question 9

A: The tapetum is essential for the formation of viable pollen.
R: The tapetum nourishes the developing microspores and supplies sporopollenin for the pollen wall.

Solution: Its nourishing/sporopollenin role is exactly why it is essential — R explains A.

Question 10

A: The embryo sac has eight nuclei but only seven cells.
R: The two polar nuclei lie within a single central cell.

Solution: Two polar nuclei sharing one central cell is why 8 nuclei = 7 cells — R explains A.

Question 11

A: The endosperm of a flowering plant is diploid.
R: The endosperm develops from the primary endosperm nucleus formed by triple fusion.

Solution: A is false — the endosperm is triploid (3n); R is true (it forms by triple fusion).

Question 12

A: Geitonogamy is functionally a type of self-pollination.
R: It transfers pollen between two flowers of the same plant, which are genetically identical.

Solution: Same-plant (genetically identical) transfer makes it self-pollination — R explains A.