MCQs Botany-34 Posted on October 21, 2025December 3, 2025Author agropublishers 0 MCQs Botany-34 1. Tobacco (Nicotiana tabacum) has diploid chromosome number (2n) = _________ 48 38 42 30 2. Land degradation and erosion are fundamentally associated to ____________________ Water availability Drought Deforestation Natural resource management 3. Which of the following transport mechanisms does NOT require energy? Endocytosis Facilitated diffusion Active transport Simple diffusion 4. ___________ the process of intentionally adding beneficial fungi to a plant’s root system to establish a symbiotic relationship, where the fungi help the plant absorb nutrients like phosphorus and nitrogen from the soil in exchange for carbon Mycorrhizal inoculation Fertilization Tillage Rhizobium fixation 5. The most common sugar in hemicellulose, especially in hardwoods and cereals, is ___________ Xylose Ribose Fructose Galactose 6. The main role of cellulose in plants is to _________ Provide structural support Store energy Regulate water transport Facilitate photosynthesis 7. The Svalbard Global Seed Vault is located in ___________ Denmark Sweden Norway Finland 8. Frost damage in crops is primarily caused by______________ Ice crystal formation inside tissues Reduced photosynthesis High respiration at night Low relative humidity 9. How are onions often used in cooking? As a sweetener As a flavor enhancer As a garnish As a thickening agent 10. The overproduction of Reactive Oxygen Species, such as superoxide radicals and hydrogen peroxide, during both abiotic and biotic stresses primarily results in ____________ Enhanced nutrient uptake Increased stomatal conductance A higher rate of carbon fixation Oxidative damage to cellular components Loading … Question 1 of 10