Botany MCQs
Ace NEET, CSS, UPSC, PMS, PPSC, and NTS exams with Botany MCQs focused on plant physiology, reproduction, taxonomy, and ecology. Gain a solid foundation to excel in biology and competitive exams.
Q: Thickened cell walls in sclerenchyma are mainly
A) Cellulose
B) Lignin
C) Pectin
D) Suberin
✅ Correct Answer: B
Explanation: Lignin adds rigidity and waterproofing.
Q: Major component of plant cuticle
A) Cutin
B) Suberin
C) Lignin
D) Cellulose
✅ Correct Answer: A
Explanation: Cutin forms the waxy cuticle layer.
Q: Specialized cells controlling stomatal opening
A) Guard cells
B) Mesophyll cells
C) Trichomes
D) Xylem vessels
✅ Correct Answer: A
Explanation: Guard cells regulate stomata aperture.
Q: Seed coat develops from
A) Endosperm
B) Ovule integuments
C) Embryo
D) Pericarp
✅ Correct Answer: B
Explanation: Seed coat arises from integuments.
Q: Photosynthetic pathway used by C4 plants
A) Hatch-Slack pathway
B) Calvin cycle only
C) CAM pathway
D) Glycolysis
✅ Correct Answer: A
Explanation: Hatch-Slack pathway minimizes photorespiration.