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