Free Agronomy MCQs with Answers

• A. All the above
• B. Ethylene level
• C. Abscisic acid
• D. Pro line level

Explanation: Water stress generally increases proline and stress-related ethylene, while increased abscisic acid promotes stomatal closure and helps…

• A. Yield performance
• B. All the above
• C. Root length of seedings
• D. Photosynthesis

Explanation: Drought tolerance is commonly assessed through its effects on yield, photosynthetic performance, and root development such as seedling…

• A. 70
• B. 20
• C. 90
• D. 95

Explanation: The prescribed minimum germination percentage for foundation seed of groundnut is 70%.

• A. Unrefined products of sugarcane
• B. Fermented fruit juice
• C. Unmalted cereals
• D. Unmalted potatoes

Explanation: Rum is produced by fermenting and distilling sugarcane products, especially molasses or sugarcane juice.

• A. Gram
• B. all the above
• C. Onion
• D. Tomato

Explanation: Gram, tomato and onion all use the C3 photosynthetic pathway; their first stable carbon product has three carbon atoms.

• A. Onion
• B. Tomato
• C. Cotton
• D. Sorghum

Explanation: Cotton seeds bear a tuft of fine hairs called lint, which acts like a parachute and allows wind dispersal.

• A. RBD
• B. SPD
• C. AD
• D. LSD

Explanation: A Latin square design controls two sources of field variation, usually fertility gradients in rows and columns.

• A. Dwarf stature
• B. Tall, leafy, high leaf/stem ratio
• C. Late resistance to disease
• D. Dwarf, late green

Explanation: A good forage plant is tall and leafy, with a high leaf-to-stem ratio because leaves generally provide more digestible and nutritious…

• A. Recalcitrant seeds
• B. Active seeds
• C. Orthodox seeds
• D. Certified seedsCrops & Seed

Explanation: Orthodox seeds tolerate drying to low moisture content and storage at low temperature while retaining viability.

• A. None of the above
• B. rice
• C. wheat
• D. maize

Explanation: Barley generally has a higher grain protein percentage than maize, although the exact values vary with cultivar and nitrogen supply.

• A. 20004000 ft
• B. 0008000 ft
• C. 1200014000 ft
• D. 02000 ft

Explanation: Field crops are generally grown in the lower-altitude plains, commonly from sea level up to about 2,000 feet.

• A. Water stress
• B. Wilting
• C. Drought
• D. None of the above

Explanation: Wilting is the visible drooping or drying of plant parts when water loss exceeds water absorption and cell turgor falls.

• A. Pyrethrum
• B. Cocon
• C. Co see
• D. Tobacco

Explanation: Tobacco is a major narcotic or stimulant crop cultivated in Pakistan, especially for cigarette and other tobacco products.

• A. Monocropping
• B. Single cropping
• C. Double, cropping
• D. All the above

Explanation: Monocropping means growing the same crop repeatedly on the same land, often year after year.

• A. 30%
• B. 21%
• C. 16%
• D. 45%

Explanation: Oxygen makes up about 21% of atmospheric air by volume, while nitrogen is the dominant gas at about 78%.

• A. 70% nitrogen
• B. 78% nitrogen
• C. 50% nitrogen
• D. None of the above

Explanation: Nitrogen constitutes approximately 78% of atmospheric air by volume, making it the most abundant atmospheric gas.

• A. Higher shoot weight
• B. None of the above
• C. Higher root weight
• D. Lower shoot weight

Explanation: Weak or low-vigour seeds have poorer membrane integrity, so they release more electrolytes into the soaking solution and show higher…

• A. Germ (1949)
• B. Woodstock (1976)
• C. Baskin (1972)
• D. Maguire (1962)

Explanation: Germ (1949) was associated with using plumule or seedling growth measurements to assess seed vigour.

• A. Quantity of seeds
• B. Quality of seeds
• C. Seed density
• D. All the above

Explanation: Quality seed improves establishment, uniformity, crop stand and yield potential, whereas simply increasing seed quantity or density can…

• A. IID grains
• B. Both a & b
• C. LD grains
• D. None of the above

Explanation: Low-density rice grains are commonly less mature or poorly filled, so they have lower vigour and are more associated with abnormal…