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