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