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