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