Gymnosperms — NEET Biology MCQs with Solutions
Free NEET Biology Gymnosperms MCQs with step-by-step solutions (6 questions). Part of Plant Kingdom. Practise online on Prepizo — no login needed.
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Questions with solutions
Q1 — Gymnosperms · easy · theory
Gymnosperms are plants in which the ovules/seeds are:
A. Enclosed in a fruit
B. Enclosed in a carpel
C. Naked (not enclosed in an ovary) ✓ Correct
D. Absent
Solution: In gymnosperms the ovules are not enclosed by an ovary wall and remain exposed (naked) before and after fertilisation.
Q2 — Gymnosperms · easy · theory
Which of the following is a gymnosperm?
A. Marchantia
B. Dryopteris
C. Cycas / Pinus ✓ Correct
D. Funaria
Solution: Cycas, Pinus, Cedrus, Ginkgo are gymnosperms; the others are pteridophytes/bryophytes.
Q3 — Gymnosperms · medium · theory
Gymnosperms lack ______, which distinguishes their wood/vascular tissue arrangement from angiosperms:
A. Tracheids
B. Vessels in the xylem (and companion cells/sieve tubes in phloem) ✓ Correct
C. Cambium
D. Cell walls
Solution: Gymnosperm xylem generally lacks vessels (has tracheids) and phloem lacks companion cells and sieve tubes.
Q4 — Gymnosperms · medium · theory
The specialised coralloid roots of Cycas harbour ______ for nitrogen fixation:
A. Frankia only
B. Rhizobium
C. Mycorrhizal fungi only
D. Cyanobacteria (e.g. Nostoc/Anabaena) ✓ Correct
Solution: Coralloid roots of Cycas contain N-fixing cyanobacteria; Pinus roots often have mycorrhizae.
Q5 — Gymnosperms · hard · theory
Gymnosperms are heterosporous, producing haploid microspores and megaspores. The male and female cones bear, respectively:
A. Fruits; seeds
B. Prothalli; spores
C. Microsporophylls with microsporangia; megasporophylls with ovules ✓ Correct
D. Ovules; pollen
Solution: Microsporophylls bear microsporangia (pollen); megasporophylls bear ovules containing the megaspore/female gametophyte.
Q6 — Gymnosperms · hard · theory
In gymnosperms, the female gametophyte is retained on the sporophyte and pollination occurs directly by:
A. Self-motile sperm swimming to a separate plant
B. Insects to a stigma
C. Wind carrying pollen to the exposed ovule (no stigma) ✓ Correct
D. Water to an archegonium on the ground
Solution: Being naked-seeded, gymnosperm pollen is carried by wind directly to the ovule; there is no ovary/stigma.