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