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