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