Free Agronomy MCQs with Answers

• A. Top dressing
• B. Broadcasting
• C. Basal application
• D. Drilling

Explanation: Fertilizer placed in the soil before or at sowing to support early crop growth is called basal application.

• A. Zero tillage
• B. Minimum tillage
• C. Secondary tillage
• D. None of the above

Explanation: Zero tillage means sowing directly into untilled soil, usually with a specialized seed drill.

• A. 1%
• B. 10.3%
• C. 0.03%
• D. 0.002%

Explanation: Carbon dioxide makes up about 0.03% of atmospheric air, although its present average concentration is slightly higher.

• A. Bacteria
• B. Fungi
• C. Ferm
• D. None of the above

Explanation: Azolla is a small aquatic fern that houses nitrogen-fixing Anabaena in its leaf cavities.

• A. Condition of cell membrane
• B. Cracking of seed test
• C. None of the above
• D. Both a & b

Explanation: Electrolyte leakage rises when cell membranes are damaged or when seed-coat cracking allows cellular solutes to escape into water.

• A. Quantitative basis
• B. Both a & b
• C. Qualitative basis
• D. None of the above

Explanation: Rice seedling vigor can be judged quantitatively through germination percentage, seedling length and dry weight, and qualitatively through…

• A. Mature seeds
• B. Abnormal seeds
• C. Immature seed?
• D. All the above

Explanation: Immature seeds often have incompletely developed membranes and consequently release more electrolytes, producing higher leachate…

• A. None of the above
• B. Low density grain
• C. Both a & b
• D. High density grain

Explanation: High-density, well-filled rice grains usually have greater stored reserves and produce more vigorous seedlings.

• A. Top of panicle
• B. Middle of panicle
• C. Bottom of panicle
• D. All the above

Explanation: In rice panicles, grains near the top generally flower earlier and receive assimilates earlier, so they are often heavier and better…

• A. Sequential cropping
• B. Strip cropping
• C. Multiple cropping
• D. All the above

Explanation: Growing two or more crops on the same land during a specified period is called multiple cropping.

• A. Mustard
• B. Sugarcane
• C. None of these
• D. Rice

Explanation: Both boron and zinc are recognized as important micronutrients in rice, where zinc deficiency is especially common and boron supports…

• A. Xerophytes
• B. Trunk plants
• C. Hydrophytes
• D. None of the above

Explanation: Xerophytes are plants adapted to dry conditions through features such as deep roots, reduced leaves, waxy surfaces or water-storage…

• A. Pheritophytes
• B. Bryophytes
• C. Xerophytes
• D. None of the above

Explanation: Phreatophytes grow where their roots can reach a high water table, such as along stream banks and river valleys.

• A. None of the above
• B. Logging
• C. Girding
• D. Habitat

Explanation: A habitat is the natural place or environment in which an organism lives, obtains resources and reproduces.

• A. Karachi
• B. Hyderabad and N.Shah
• C. None of the above
• D. Sukkar and. Khairpur

Explanation: The Registan or desert tract referred to in this classification includes the Sukkur and Khairpur districts.

• A. Arid zone research institute
• B. Agriculture zonal research institute
• C. Attock Zonal research institute
• D. None of the above

Explanation: AZRI stands for Arid Zone Research Institute, an institute concerned with agricultural research under dryland conditions.

• A. Sub-temperature
• B. Arctic
• C. Semiarid
• D. Semi arctic

Explanation: An Arctic climate has a very long, severe winter and a short, cool summer, with low temperatures limiting the growing season.

• A. Temperature
• B. Arid
• C. None of the above
• D. Subtropical

Explanation: A subtropical climate is generally hot or warm for much of the year but has a relatively cool winter.

• A. Chenopodiaceae
• B. Cucurbitaceae
• C. Poaceae
• D. non of these

Explanation: Sugar beet is traditionally classified in the family Chenopodiaceae, along with related beet and spinach crops.

• A. Companion crops
• B. Cover crops
• C. Mixed crops
• D. Ratooning crops

Explanation: Cover crops protect bare soil from raindrop impact, runoff and erosion, while their roots help reduce nutrient losses through leaching.