MCQs Botany-31 Posted on July 20, 2025August 30, 2025Author agropublishers 0 1. Which of the following is the widely accepted physiological role of gibberellins in plants? Induction of leaf abscission Stimulation of root hair formation Maintenance of seed dormancy Promotion of stem elongation 2. Which of the following insects is NOT herbivorous? Armyworm Thrips None of these Whiteflies 3. In botanical gardens, pheromone traps are primarily used to _____________ Repel beneficial insects Monitor insect populations Directly kill all insects Enhance soil fertility 4. Which device is commonly used for collecting soil samples from the field? Soil moisture meter Penetrometer None of these Soil auger 5. The biologically active form of phytochrome (Pfr) is primarily stabilized under___________ light condition Far-red light Blue light Red light UV light 6. Abscisic acid (ABA) plays a crucial role in ____________ Promoting fruit ripening Phototropism Cell wall loosening Stomatal closure under drought 7. Which of the following represents a fundamental developmental difference between plants and animals? Plants lack level of cellular organization Plants have very slow growth processes Plants maintain totipotency in somatic cells throughout their lifespan None of these 8. Which device detects chlorophyll content in leaves? pH meter Calorimeter SPAD Anemometer 9. ________________ plants are specifically adapted and thrive in sandy environments Xerophytic Psammophilous Halophyte None of these 10. Cytokinins are synthesized mainly in the___________ Root tip Mature leaves Flower petals Woody stems Loading … Question 1 of 10
