MCQs Botany-28 Posted on March 9, 2025August 30, 2025Author agropublishers 0 1. What is leghemoglobin? A protein that stores nitrogen in plant cells An enzyme that catalyzes the conversion of atmospheric nitrogen to ammonia A pigment that absorbs light energy for photosynthesis An oxygen-carrying protein in root nodules of legumes, facilitating nitrogen fixation 2. What is the role of ATP in photosynthesis? Carbon fixation Water splitting Energy transfer Oxygen production 3. ————— is the process of storing, analyzing, and interpreting large amounts of biological data, including genetic sequences, protein structures, and gene expression data Systems biology Data science Bioinformatics Computational biology 4. Tocopherols are a class of lipid-soluble compounds that are commonly referred to as ———- Vitamin D Vitamin A Vitamin C Vitamin E 5. ——— is the first steroid hormone group discovered in plants Turgorins Brassinosteroid Ethylene Abscisic acid 6. In a hypertonic solution, cells undergo ———- Active transport Endosmosis None of these Exosmosis 7. What is the primary source of carbon for plants? Methane Atmospheric CO₂ Soil organic matter None of these 8. ———- is the family name of common cotton plant Gramineae Malvaceae Poaceae Solanaceae 9. What is the major constituent of the protoplast? Cellulose Oxygen Water Carbon 10. Which hormone helps in breaking seed dormancy? Ethylene Cytokinin Abscisic acid Gibberellin Loading …
