MCQs Agronomy-42

1. In sugarcane (Saccharum officinarum), which of the following photosynthetic pathways is primarily responsible for carbon fixation?

 CAM pathway (Crassulacean Acid Metabolism)

 C4 pathway (Hatch-Slack pathway)

 Both C3 and C4 pathways

 C3 pathway (Calvin cycle)

2. Guttation is the process by which plants secrete water droplets through ———

 Stomata

 Lenticels

 Trichomes

 Hydathodes

3. What is the primary function of salt glands in plants adapted to saline environments?

 Salt absorption

 Salt excretion

 Nutrient storage

 Water absorption

4. What is the primary purpose of the squaring stage in cotton plant development?

 Root establishment

 Stem elongation

 Leaf expansion

 Flower initiation

5. ———— is the primary global use of cotton

 Food and Beverage

 Textile industry

 Industrial Applications

 Animal feed

6. ————– crop is the primary source of global sugar production

 Sorghum

 Sugarcane

 Maize

 Sugar beet

7. Which of the following crop groups provides approximately half of the global human energy intake?

 Root and tuber crops

 Cereals

 Legumes

 Nuts and seeds

8. What is the primary method of propagating sugarcane?

 Roots

 Grafting

 Stem cuttings

 Seeds

9. Cotton plant is highly susceptible to frost and require prolonged frost-free period for optimal growth. Cotton requires a minimum of ————- frost-free days for optimal growth and successful cultivation

 50

 200

 100

 150

10. For metabolic processes of the cell, energy is supplied by —————- molecules, which are the primary energy currency of the cell

 ADP (Adenosine Diphosphate)

 ATP (Adenosine Triphosphate)

 NADP (Nicotinamide Adenine Dinucleotide Phosphate)

 AMP (Adenosine Monophosphate)

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