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: Plants that complete life cycle in one year called
A) Perennials
B) Biennials
C) Annuals
D) Ephemerals
✅ Correct Answer: C
Explanation: Annuals complete life cycle within one growing season.
Q: Chloroplast DNA is inherited from
A) Both parents
B) Pollen
C) Ovule
D) Mother
✅ Correct Answer: D
Explanation: Chloroplasts are maternally inherited in most plants.
Q: Function of sieve tubes in phloem
A) Conduct water
B) Conduct food
C) Provide support
D) Storage
✅ Correct Answer: B
Explanation: Sieve tubes conduct organic nutrients.
Q: Main site of aerobic respiration in plant cells
A) Chloroplast
B) Mitochondria
C) Cytoplasm
D) Vacuole
✅ Correct Answer: B
Explanation: Mitochondria generate ATP via respiration.
Q: Protective layer covering aerial plant parts
A) Cuticle
B) Epidermis
C) Cork
D) Periderm
✅ Correct Answer: A
Explanation: Cuticle reduces water loss.