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