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