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