MCQs Botany-29 Posted on April 3, 2025August 30, 2025Author agropublishers 0 1. Which of the following is NOT typically represented on a climograph? Monthly precipitation totals Monthly temperature averages Seasonal climate trends Wind speed patterns 2. Which phytohormone plays the most significant role in regulating plant height by promoting stem elongation? Abscisic acid Gibberellin Ethylene Cytokinin 3. Photonasty is a ———- plant movement that occurs in response to light intensity Non-directional Directional None of these 4. Based on morphological and molecular evidence, which of these dicotyledonous families is considered the most evolutionarily advanced? Acanthaceae Apiaceae (Umbelliferae) Asteraceae (Compositae) Scrophulariaceae 5. Which phytohormone is primarily responsible for inducing seed dormancy and inhibiting germination under unfavorable conditions? Abscisic acid Gibberellin Ethylene Cytokinin 6. Which of the following describes a symbiotic association between the hyphae of a fungus and the roots of a plant? Actinomycetes Bryophyte Mycorrhizae Parasite 7. Select the correct counterpart that has the same relation with the given word: Mountain : Hill :: Tree : __________? Ecosystem Shrub Forest Leaf 8. _____________ play a crucial role in the nitrogen cycle by oxidizing ammonia (NH4+) to nitrite (NO2-) Nitrosomonas Azotobacter Nitrobacter Rhizobium 9. Phytohormone _________ is involved in the induction of “triple response” (reduced elongation, thickened stem, exaggerated curvature) Auxin Ethylene Jasmonic acid Brassinosteroids 10. Manchester is known for ___________ due to its historical dominance in the textile industry during the Industrial Revolution Cotton Textile Polyester Textile Silk Textile Woollen Textile Loading …