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