This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 15 Plant Growth And Development – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 15 Plant Growth And Development Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What role does light play in plant growth? A) It helps plants resist drought. B) It provides energy for photosynthesis. C) It transports nutrients to plant cells. D) It helps plants grow taller. Show Answer Correct Answer: B) It provides energy for photosynthesis. 2. The phenomenon of apical dominance is strengthened by- A) Removal of the tip. B) Removal of leaves. C) Auxin production. D) Production of fruits. Show Answer Correct Answer: C) Auxin production. 3. What is the process by which different plant species grow from a single seed into a plant? A) Photosynthesis. B) Respiration. C) Germination. D) Transpiration. Show Answer Correct Answer: C) Germination. 4. Promotes elongation of cells between nodes A) Auxin. B) Cytokinin. C) Gibberellin. D) Ethylene. Show Answer Correct Answer: C) Gibberellin. 5. Primary growth in plants causes ..... A) Plants to grow wider. B) Plants to grow taller. C) Plants to produce flowers. D) Leaves to fall off. Show Answer Correct Answer: B) Plants to grow taller. 6. Which are growth hormones that are produced by the apical meristem? A) Gibberelins. B) Auxins. C) Cytokins. D) Etiolations. Show Answer Correct Answer: B) Auxins. 7. Water loss from the leaf structure through evaporatoin is the plant process called: A) Absorption. B) Photosynthesis. C) Respiration. D) Transpiration. Show Answer Correct Answer: D) Transpiration. 8. What happens to seeds in soil over time compared to those without soil? A) They grow slower. B) They grow faster. C) They stop growing. D) They turn yellow. Show Answer Correct Answer: B) They grow faster. 9. For pollination, the pollen must go from the stamen to the ..... A) Pistil. B) Stamen. C) Bee. D) Leaf. Show Answer Correct Answer: A) Pistil. 10. In our topic auxin who is the son of Charles Darwin? A) Charles Darwin Jr. B) Francis Darwin. C) Francis Charles Darwin. D) France Darwin. Show Answer Correct Answer: B) Francis Darwin. 11. When a seed soaks up water, what happens to the seed? A) Shrinks. B) Explodes. C) Expands. D) Nothing. Show Answer Correct Answer: C) Expands. 12. What is the term used for the increase in the diameter of the plant body by the division of the secondary meristem? A) Secondary Growth. B) Limited Growth. C) Unlimited Growth. D) Primary Growth. Show Answer Correct Answer: A) Secondary Growth. 13. There are two types of vascular tissue in plants. Which one brings water up from the roots? A) Phloem. B) Xylem. C) All the above. D) None of the above. Show Answer Correct Answer: B) Xylem. 14. Which hormone help the plant to increase their water absorption surface? A) Gibberellic acid. B) Auxins. C) ABA. D) Ethylene. Show Answer Correct Answer: D) Ethylene. 15. Rearrange the FOUR phases of a typical sigmoid curve into the CORRECT sequenceI Log phaseII Stationary phaseIII Linear phaseIV Lag phase A) I, IV, III, II. B) I, IV, II, III. C) IV, I, III, II. D) IV, I, II, III. Show Answer Correct Answer: C) IV, I, III, II. 16. The first step in seed germination is ..... A) Imbibition. B) Activation of hormone. C) Nutrient mobilisation. D) Breaking of testa. Show Answer Correct Answer: A) Imbibition. 17. The cork cambium produces A) Vascular cambium. B) Cork in the vascular cambium. C) Cork in the xylem. D) Cork in the bark layer. Show Answer Correct Answer: D) Cork in the bark layer. 18. Which of the following promotes senescence mainly? A) Auxin. B) Cytokinin. C) Gibberellin. D) ABA. Show Answer Correct Answer: B) Cytokinin. 19. After double fertilisation, the ovary will develop into ..... A) Embryo. B) Endosperm. C) Fruit. D) Testa. Show Answer Correct Answer: C) Fruit. 20. The chemical reactions where carbon is removed from carbon dioxide to make other organic molecules such as sugars. A) Light-dependent reactions. B) Carbon fixing reactions. C) Photoelectric effect. D) Photons. Show Answer Correct Answer: B) Carbon fixing reactions. 21. Why do plants eventually need soil? A) For support only. B) For water only. C) For nutrients. D) For sunlight absorption. Show Answer Correct Answer: C) For nutrients. 22. Which tissue is pushed outward and eventually compressed into a thin layer during secondary growth? A) Secondary xylem. B) Primary phloem. C) Vascular cambium. D) Pith. Show Answer Correct Answer: B) Primary phloem. 23. What is the process called where plants manufacture their own food? A) Oxidation. B) Photosynthesis. C) Transpiration. D) Respiration. Show Answer Correct Answer: B) Photosynthesis. 24. Natural cytokinins are synthesised in regions where rapid cell division occurs. Such regions are A) Root apices. B) Developing shoot buds. C) Young fruits. D) All of these. Show Answer Correct Answer: D) All of these. 25. AUXIN Derived from the Greek word ..... which means to grow A) Auxien. B) Auxiin. C) Auxieen. D) Auxein. Show Answer Correct Answer: D) Auxein. ← PreviousNext →Related QuizzesClass 11 Biology Chapter 15 Plant Growth And Development Quiz 1Class 11 Biology Chapter 15 Plant Growth And Development Quiz 2Class 11 Biology Chapter 15 Plant Growth And Development Quiz 3Class 11 Biology Chapter 15 Plant Growth And Development Quiz 4Class 11 Biology Chapter 15 Plant Growth And Development Quiz 5Class 11 Biology Chapter 15 Plant Growth And Development Quiz 6Class 11 Biology Chapter 15 Plant Growth And Development Quiz 7Class 11 Biology Chapter 15 Plant Growth And Development Quiz 8Class 11 Biology Chapter 15 Plant Growth And Development Quiz 9Class 11 Biology Chapter 15 Plant Growth And Development Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books