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