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