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