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