Free Agronomy MCQs with Answers
312 Agronomy MCQs from Agriculture, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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312 questions · page 15 of 16
- A. Crop sequence
- B. Crop rotation
- C. Cropping system
- D. Crop management
Explanation: Crop rotation means growing different crops, and sometimes pasture or fallow, in a planned sequence on the same land to maintain…
Correct answer: Crop rotation- A. tropical
- B. Temperature
- C. Sub tropical
- D. all
Explanation: Sindh has a generally hot, dry subtropical climate, although local conditions vary between the coast, irrigated plains and desert areas.
Correct answer: Sub tropical- A. Growing different crops
- B. Growing green manures
- C. Same craps
- D. Growing fodder crops
Explanation: Crop rotation is the planned succession of different crops on the same land over successive seasons or years.
Correct answer: Growing different crops- A. Thermophytes
- B. Xerophytes
- C. Hydrophytes
- D. Haplophytes
Explanation: Xerophytes are plants adapted to dry habitats, often having deep roots, reduced leaves, or other water-conserving features.
Correct answer: Xerophytes- A. Low temperature
- B. Humidity
- C. High temperature
- D. Cloudy day
Explanation: High temperature, especially when combined with moisture stress, can cause cotton squares and flowers to shed before boll formation.
Correct answer: High temperature- A. Peshawar
- B. Islamabad
- C. Rawalpindi
- D. Chakwal
Explanation: The Barani Agricultural Research Institute is located at Chakwal, an important rainfed farming region of Punjab.
Correct answer: Chakwal287. The ratio of actual cultivated area to a total farm area over a year is called__________________?
- A. Cropping intensity
- B. Cropping pattern
- C. Cost-benefit ratio
- D. None of the above
Explanation: Cropping intensity measures how intensively land is used during a year, usually as gross cropped area divided by net cultivated or sown…
Correct answer: Cropping intensity- A. Biosystem
- B. Symbiosis
- C. Auto environment
- D. Climate
Explanation: Symbiosis is a prolonged, close association between organisms of different species, with effects that may be beneficial, harmful, or…
Correct answer: Symbiosis- A. fertilizer placement
- B. fertilizer use efficiency
- C. Balanced fertilization
- D. Nitrogen use efficiency
Explanation: Balanced fertilization supplies nutrients in suitable proportions according to crop requirements, rather than emphasizing only nitrogen or…
Correct answer: Balanced fertilization290. The total dry matter produced by a plant as a result of photosynthesis is called_________________?
- A. Crop growth
- B. Harvest index
- C. Dry matter
- D. Biological yield
Explanation: Biological yield is the total accumulated plant dry matter, including the harvested product and the remaining plant parts.
Correct answer: Biological yield- A. Pollution
- B. Green house effect
- C. Warming
- D. Solar radiation
Explanation: The greenhouse effect occurs when gases allow incoming short-wave sunlight to pass but absorb and re-radiate outgoing long-wave heat.
Correct answer: Green house effect- A. Corchorus
- B. Clemates
- C. Cocos
- D. Crotalaria
Explanation: Cocos, especially coconut, is a monocotyledonous plant that yields coir fibre from its fruit husk.
Correct answer: Cocos- A. Broad cast method
- B. non of these
- C. Ridge sowing method
- D. Drill method
Explanation: Drilling places cotton seed at a fairly uniform depth and spacing, producing a more even stand than broadcasting.
Correct answer: Drill method- A. 10-12 kg
- B. 6-8 kg
- C. 15-18 kg
- D. non of these
Explanation: American cotton generally requires about 10–12 kg of seed per acre under conventional sowing.
Correct answer: 10-12 kg- A. Sympodial branches
- B. Monopodial branches
- C. Vegetative branches
Explanation: Monopodial branches are vegetative branches and normally do not bear fruit, so they are called unproductive branches.
Correct answer: Monopodial branches- A. 5.2 to 9.0
- B. non of these
- C. 3.5 to 5.5
- D. 5.2 to 7.0
Explanation: Cotton performs best in slightly acidic to neutral soil, with an optimum pH commonly given as about 5.2–7.0.
Correct answer: 5.2 to 7.0- A. Both A and B
- B. Sub-tropical region
- C. Tropical region
Explanation: Cotton needs a long, warm frost-free season and is cultivated in both tropical and subtropical climates.
Correct answer: Both A and B- A. Hypogeal germination
- B. Epigeal germination
- C. Both of the above
- D. non of these
Explanation: Cotton shows epigeal germination: the hypocotyl elongates and lifts the cotyledons above the soil surface.
Correct answer: Epigeal germination- A. C4 plant
- B. CAM plant
- C. C3 plant
- D. non of these
Explanation: Cotton uses the C3 photosynthetic pathway, like wheat, rice and most temperate crops.
Correct answer: C3 plant- A. 12800,000 bales
- B. 1200,000 bales
- C. 1000,000 bales
- D. 1100,000 bales
Explanation: Pakistan recorded about 12.8 million bales of cotton in 1991–92, making this one of the country’s peak cotton-production years.
Correct answer: 12800,000 bales