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