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