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