All Free Agriculture MCQs with Answers

• A. All the aboveSearch Public Records
• B. Oxygen
• C. Temperature
• D. Substrate

Explanation: Respiration is influenced by the available respiratory substrate, oxygen supply and temperature.

• A. Respiration
• B. Both a & b
• C. Respiratory quotient
• D. None of the above

Explanation: The respiratory quotient is the ratio of carbon dioxide released to oxygen absorbed during respiration.

• A. Secretion
• B. Respiration
• C. Excretion
• D. Conversion of light energy into chemical energy

Explanation: Plastids are plant organelles with specialized roles; chloroplasts capture light and convert it into chemical energy during…

• A. Altmann
• B. Palade
• C. Cowdry
• D. Garner

Explanation: Richard Altmann identified and described mitochondria, initially calling them bioblasts.

• A. Knoll and Risks
• B. Schwaan
• C. Sigmund
• D. Robert Hook

Explanation: The electron microscope was developed by Ernst Ruska and Max Knoll, allowing much greater magnification than a light microscope.

• A. Legume fruits
• B. Fermented juices of fruits
• C. Raw grains
• D. Fermented mash of malted or unmalted cereals and potatoes

Explanation: Whisky is made by fermenting and distilling a mash based mainly on malted or unmalted cereal grains, such as barley, corn, rye or wheat.

• A. all the above
• B. Sorghum
• C. Maize
• D. Sugarcane

Explanation: Sugarcane, sorghum and maize are all C4 plants, using the C4 pathway for efficient carbon fixation under high light and temperature.

• A. SPD
• B. RBD
• C. AD
• D. LSD

Explanation: A randomized block design controls variation in one direction by grouping similar experimental units into blocks and randomizing…

• A. t-test
• B. F-test
• C. Z-test
• D. x-test

Explanation: An F-test in analysis of variance compares several treatment means simultaneously by comparing treatment variance with error variance.

• A. Increase in proline level
• B. Increase in ethylene level
• C. leaf rolling
• D. all the above

Explanation: Drought commonly causes osmotic adjustment through increased proline, stimulates ethylene production, and produces leaf rolling to reduce…

• 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.