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