Category: Daily Practice MCQs
Agriculture Daily Practice MCQs – 53
By Agritests |
27 Jul, 2026
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1. Which enzyme catalyzes the committed step in ethylene biosynthesis by converting S-adenosyl-L-methionine (SAM) into 1-aminocyclopropane-1-carboxylic acid (ACC)? A. ACC Oxidase B. Methionine Synthase C. ACC Synthase D. Lipoxygenase Show Answer Answer: C. ACC Synthase Explanation: ACC synthase is the rate-limiting enzyme in ethylene biosynthesis, converting SAM into ACC, which is subsequently oxidized by ACC […]
Agriculture Daily Practice MCQs – 52
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27 Jul, 2026
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1. In the biosynthetic pathway of plant jasmonates, which specific cellular organelle acts as the site for the initial oxygenation of alpha-linolenic acid by 13-lipoxygenase (13-LOX)? A. Endoplasmic Reticulum B. Chloroplast (Plastid) C. Peroxisome D. Mitochondrion Show Answer Answer: B. Chloroplast (Plastid) Explanation: Jasmonic acid biosynthesis is compartmentalized. It initiates in the chloroplast, where lipoxygenase, […]
Agriculture Daily Practice MCQs – 51
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27 Jul, 2026
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1. In C3-C4 intermediate plants, how does the phenomenon of ‘photorespiratory CO2 scavenging’ function as an evolutionary bridge toward true C4 photosynthesis? A. They overexpress RuBisCO in the mesophyll cells to fully swamp out incoming oxygen molecules. B. They restrict the enzyme glycine decarboxylase (GDC) exclusively to bundle sheath cells, forcing photorespiratory CO2 release there […]
Agriculture Daily Practice MCQs – 50
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27 Jul, 2026
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1. In the context of the photosynthetic carbon reduction cycle, what is the exact molecular role of the enzyme RuBisCO activase? A. It directly phosphorylates RuBisCO to convert it from an inactive state to an active state. B. It uses the energy of ATP hydrolysis to remove tightly bound sugar phosphates or misrouted substrates from […]
Agriculture Daily Practice MCQs – 49
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27 Jul, 2026
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1. In the context of genetic resistance to biotrophic pathogens, how do the ‘Flor’s Gene-for-Gene hypothesis’ and the ‘Zig-Zag model’ explain the activation of Effector-Triggered Immunity (ETI)? A. A single dominant resistance (R) gene product in the host directly or indirectly recognizes a specific avirulence (Avr) effector protein from the pathogen, bypassing PAMP recognition entirely. […]
Agriculture Daily Practice MCQs – 48
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27 Jul, 2026
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1. Which of the following best describes the physiological phenomenon of “luxury consumption” in crop plants? A. Continued absorption of a nutrient by the plant beyond the point where it increases yield, without causing toxicity. B. High water intake by succulent crops under high humidity conditions resulting in guttation. C. Rapid vegetative growth triggered by […]
Agriculture Daily Practice MCQs – 47
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27 Jul, 2026
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1. Which of the following institutions was established under the Regional Rural Banks Act, 1976? A. NABARD B. Regional Rural Banks (RRBs) C. SIDBI D. EXIM Bank Show Answer Answer: B. Regional Rural Banks (RRBs) Explanation: RRBs were established under the Regional Rural Banks Act, 1976, to provide banking and credit facilities to rural areas. […]
Agriculture Daily Practice MCQs – 46
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27 Jul, 2026
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1. Which of the following institutions is the apex refinancing agency for agriculture and rural development in India? A. RBI B. SIDBI C. NABARD D. EXIM Bank Show Answer Answer: C. NABARD Explanation: NABARD is India’s apex development financial institution for agriculture and rural development and provides refinance to eligible financial institutions. 2. Which of […]
Agriculture Daily Practice MCQs – 45
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27 Jul, 2026
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1. Which of the following crops is most sensitive to boron deficiency? A. Rice B. Wheat C. Sunflower D. Mustard Show Answer Answer: D. Mustard Explanation: Oilseed crops, especially mustard, are highly sensitive to boron deficiency, which affects flowering, seed setting, and yield. 2. The Kisan Credit Card (KCC) Scheme was introduced in India in: […]
Agriculture Daily Practice MCQs – 44
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27 Jul, 2026
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1. Which of the following agencies implements the Interest Subvention Scheme (ISS) for short-term crop loans in India? A. RBI B. NABARD C. Department of Agriculture & Farmers Welfare D. Ministry of Finance Show Answer Answer: C. Department of Agriculture & Farmers Welfare Explanation: The Interest Subvention Scheme for crop loans is implemented by the […]