All Free Agriculture MCQs with Answers

• 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.

• A. Relative humidity
• B. Both A and B
• C. Absolute humidity
• D. non of these

Explanation: Absolute humidity is the actual mass of water vapour present in a given volume of air.

• A. All the above
• B. Halophytes
• C. Xerophytes
• D. Saprophytes

Explanation: Saprophytes obtain nutrients from dead and decaying organic matter, helping decompose it and recycle nutrients.

• A. Mulching
• B. Soil solarization
• C. Fumigation
• D. None of the above

Explanation: Soil solarization uses transparent or black plastic to trap solar heat and raise soil temperature, helping control soil-borne pests…

• A. Ethane
• B. Ammonia
• C. Methane
• D. CO2

Explanation: Methane is produced when microorganisms decompose organic matter without oxygen, and it is the main energy-rich component of biogas.

• A. Infra blue radiation
• B. None of the above
• C. X rays
• D. Infra red radiation

Explanation: The Earth absorbs incoming short-wave solar radiation and emits the absorbed heat back mainly as long-wave infrared radiation.

• A. Xerophytes
• B. Thermophyts
• C. Mesophytes
• D. Halophytes

Explanation: Xerophytes are plants adapted to dry environments, commonly through deep roots, reduced leaves or waxy surfaces that limit water loss.

• A. Cropping pattern
• B. Cost benefit ratio
• C. Cropping intensity
• D. Cropping system

Explanation: Cropping intensity expresses how intensively land is used during a year, commonly calculated as gross cropped area divided by net…

• A. 60
• B. none of the above
• C. 95
• D. 80

Explanation: Pakistan covers approximately 79.6 million hectares, conventionally rounded to 80 million hectares.

• A. Seed sorter
• B. Seed blower
• C. Seed divider
• D. a and b

Explanation: A seed sorter separates and grades seed lots according to characteristics such as size, shape or density, while also helping remove…

• A. Lipase
• B. Nitrogenase
• C. Isomerase
• D. Kinease

Explanation: Nitrogenase is the enzyme complex that converts atmospheric nitrogen into ammonia during biological nitrogen fixation.