NEET (UG)

Practice Test 1 — Plant Kingdom

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

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Section A — MCQ (Single Correct)

Question 1

The pigment phycoerythrin is characteristic of:

Solution: Phycoerythrin gives red algae (Rhodophyceae) their colour.

Question 2

Laminarin and mannitol are stored foods of:

Solution: Brown algae store laminarin/mannitol.

Question 3

The dominant generation in pteridophytes is the:

Solution: Pteridophytes have a dominant diploid sporophyte.

Question 4

Naked seeds are a feature of:

Solution: Gymnosperm seeds are naked (no fruit).

Question 5

Which of these does NOT require water for fertilisation?

Solution: Gymnosperms use a pollen tube, so no water is needed.

Question 6

The triploid primary endosperm nucleus is formed during:

Solution: Triple fusion (one male gamete + two polar nuclei) gives the 3n nucleus.

Question 7

Gemma cups are characteristic asexual structures of:

Solution: Marchantia (a liverwort) bears gemmae in gemma cups.

Question 8

A diplontic life cycle is shown by:

Solution: Angiosperms (and gymnosperms) are diplontic.

Section B — Assertion & Reason

Question 9

A: Bryophytes need water to complete sexual reproduction.
R: Their male gametes (antherozoids) are motile and must swim through a film of water to reach the egg.

Solution: Motile antherozoids needing water is exactly why water is required — R explains A.

Question 10

A: Gymnosperms can reproduce successfully in dry habitats.
R: Pollen grains reach the ovule via wind and a pollen tube, so external water is not needed for fertilisation.

Solution: Pollen-tube delivery removes the water dependence — R explains A.

Question 11

A: In bryophytes the sporophyte is completely independent of the gametophyte.
R: The bryophyte sporophyte is photosynthetic and free-living throughout life.

Solution: Both statements are false — the sporophyte is attached to and partially dependent on the gametophyte.

Question 12

A: Heterospory in Selaginella is considered a precursor to the seed habit.
R: It produces two kinds of spores — microspores and megaspores.

Solution: Producing megaspores that can be retained/germinate on the parent leads toward the seed habit — R explains A.