Free Agronomy MCQs with Answers

• A. Glucopage
• B. Glycolysis
• C. Glycogen
• D. None of the above

Explanation: Glycolysis is the pathway that breaks glucose, or a compound entering through fructose metabolism, into pyruvic acid while releasing…

• A. Oxidation
• B. Transportation
• C. Respiration
• D. Both a & b

Explanation: Respiration is the controlled oxidation of organic compounds, releasing their stored energy for cellular activities.

• A. Photoperiodism
• B. Transpiration
• C. Photosynthesis
• D. Conversion

Explanation: Photosynthesis converts light energy into chemical energy stored mainly in glucose.

• A. Angiosperm
• B. Gymnosperm
• C. Dieetyledens
• D. Monocotyledons

Explanation: Angiosperms are flowering plants whose seeds are enclosed within fruits, and they include many major food, fiber and shelter-producing…

• A. Ecology
• B. Taxonomy
• C. Morphology
• D. Histology

Explanation: Taxonomy identifies, names and classifies plants into groups based on their characteristics.

• A. Heat action
• B. Molar heat
• C. Specified heat
• D. None of the above

Explanation: Specific heat is the heat required to raise the temperature of a unit mass of a substance by 1°C.

• A. Km
• B. Lumen
• C. Noticlemiles
• D. Lux

Explanation: Lux is the metric unit of illuminance, measuring the amount of light falling on a surface.

• A. Abscisic acid
• B. Auxins
• C. Gibberellins
• D. All the above

Explanation: Auxins are produced in actively growing regions such as terminal and lateral buds and help regulate growth and apical dominance.

• A. Long day plants
• B. Long night plants
• C. Day natural plants
• D. Long day and Long night plants

Explanation: Cucumber, kidney bean, pea and tomato are generally day-neutral plants, meaning flowering is not strongly controlled by day length.

• A. Senescence
• B. Both a & b
• C. Maturity
• D. Partial Senescence

Explanation: Senescence is the natural deterioration and death of plant organs. When it affects only certain aerial parts while the remainder of the…

• 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…