MCQs Botany-21 Posted on February 11, 2025August 30, 2025Author agropublishers 0 1. Which of the following is a primary function of the cell membrane? Synthesizing proteins for cellular functions Providing structural support to the cell Regulating the movement of substances in and out of the cell Storing and transmitting genetic information 2. ——- is a defining feature of chloroplasts Chloroplasts are primarily involved in water and nutrient storage Chloroplasts play a primary role in cellular respiration Chloroplasts are present in all eukaryotic cells Chloroplasts contain chlorophyll for photosynthesis 3. What is primary succession? A natural progression of species replacement in an existing grassland ecosystem Ecological succession in a previously uninhabited and barren area with no existing soil Reestablishment of an ecosystem after human activities like logging Recovery of an ecosystem after a disturbance, utilizing existing soil and vegetation 4. What is the immediate source of energy for cellular processes? Glucose NADH (Nicotinamide Adenine Dinucleotide) FADHâ‚‚ (Flavin Adenine Dinucleotide) ATP (Adenosine Triphosphate) 5. Primary function of ———- is to provide structural support to the cell Ribosome Cell wall Plasma membrane Nucleus 6. What is the primary purpose of mitosis? Enable growth and tissue repair Produce gametes for sexual reproduction Increase genetic diversity through recombination Reduce the chromosome number by half 7. Which process ensures genetic diversity in plants by producing haploid cells with unique combinations of chromosomes? Budding Mitosis Meiosis Binary fission 8. What is the primary role of ethylene in plants? Promote cell elongation Inhibit plant growth Regulate fruit ripening and senescence Induce seed dormancy 9. Which process is directly dependent on photosynthesis? Water cycle Plant growth Cellular respiration Decomposition 10. ————- is a stack of thylakoids Lamellae Matrix Stroma Granum Loading …
