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