Agriculture MCQs
Agriculture MCQs help candidates prepare for exams like PPSC, FPSC, and NTS. Topics include agronomy, soil science, crop physiology, horticulture, and pest control, ensuring strong conceptual and factual preparation for competitive and academic tests.
Q: Photosynthesis in plants primarily takes place in which structure?
A) Root
B) Stem
C) Leaf
D) Flower
✅ Correct Answer: C
Explanation: Leaves contain chlorophyll, the pigment necessary for capturing light energy during photosynthesis.
Q: Crop rotation improves soil health by which key factor?
A) Increasing weeds
B) Depleting nutrients
C) Breaking pest cycles
D) Encouraging erosion
✅ Correct Answer: C
Explanation: Rotating crops disrupts pest and disease cycles, enhancing soil productivity.
Q: Nitrogen fixation is most commonly associated with which group of organisms?
A) Fungi
B) Algae
C) Bacteria
D) Protozoa
✅ Correct Answer: C
Explanation: Nitrogen-fixing bacteria, such as Rhizobium, convert atmospheric nitrogen into a form usable by plants.
Q: The process of removing excess water from soil is called
A) Irrigation
B) Mulching
C) Fertigation
D) Drainage
✅ Correct Answer: D
Explanation: Drainage prevents waterlogging and promotes healthy root development.
Q: Leguminous plants contribute to soil fertility due to their ability to
A) Store phosphorus
B) Fix nitrogen
C) Absorb heavy metals
D) Reduce erosion
✅ Correct Answer: B
Explanation: These plants have symbiotic bacteria in their roots that fix atmospheric nitrogen.