MCQs Botany-15 Posted on 2024-07-122024-11-08Author admin 0 MCQs Botany-15 1. Cytochromes are a group of biochemicals found in ——— Only in bacteria Only in animals Only in plants In almost all living cells 2. Which of the following is needed in both photosynthesis and respiration? Chlorophyll Cytochrome Sunlight Glucose 3. Which is a precursor to ethylene in plants? Glucose Sucrose Chlorophyll Methionine 4. ———– is the shallow zone of a lake or ocean where most aquatic plants grow Benthic zone Littoral zone Neritic zone Profundal zone 5. What is the main pigment involved in the transfer of electrons in photosynthesis? Carotenoids Phytochrome Chlorophyll c Cytochrome 6. Grasses are more sensitive to _________ Freezing Alternate Freezing and Thawing Thawing 7. Which statement is true about ethylene? Gaseous plant hormone Breaks apical dominance Inhibits fruit ripening Used in long-term fruit storage 8. Which hormone is responsible for causing the closure of stomata? Auxin Ethylene Gibberellin Abscisic Acid 9. What is a food chain? A group of organisms that coexist in an ecosystem A network of organisms that consume each other A linear sequence of organisms that consume each other All of these 10. Which nitrogenous base is unique to RNA and not found in DNA? Uracil (U) Adenine (A) Guanine (G) Cytosine (C) Loading …
