MCQs Botany-39 Posted on October 22, 2025December 3, 2025Author agropublishers 0 MCQs Botany-39 1. Light-dependent reactions occur in _________ chloroplasts Outer membrane Inner membrane Stroma Thylakoid membranes 2. The Richmond–Lang effect refers to the delay of ________ in plant tissues due to cytokinins. Abscission Photomorphogenesis Senescence Cell division 3. __________ is the primary product of photolysis in light reactions ATP Glucose Oxygen NADPH 4. The most resistant and stable component of soil organic matter, contributing to humus formation, is ________ Peptides Hemicellulose Lignin Cellulose 5. What is the primary function of the Calvin Cycle? To generate ATP and NADPH To split water To fix CO2 into glucose To produce oxygen 6. What is the energy source for the Calvin Cycle? ATP and NADPH Light Oxygen Glucose 7. _________ is a gymnosperm species known as the “living fossil” Cycas revoluta Ginkgo biloba Pinus wallichiana Ephedra gerardiana 8. Soil organic matter is primarily composed of which of the following major elements? C, N, K, Fe, Mn, Cu C, O, Si, Fe, Al C, H, O, N, S, P C, N, Cl, Na, Mg 9. ______________ are called “amphibians of Kingdom Plantae” Pteridophytes Gymnosperms Algae Bryophytes 10. Tomato (Solanum lycopersicum) has a diploid chromosome number (2n) of _____________. 24 10 18 12 Loading … Question 1 of 10
