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