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