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