This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 15 Plant Growth And Development – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 15 Plant Growth And Development Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What sticks to the bees hairy body? A) Nectar. B) Pollen. C) Petals. D) None of the above. Show Answer Correct Answer: B) Pollen. 2. Which of the following is a potent weedicide? A) IPA. B) TIBA. C) BAP. D) 2, 4-D. Show Answer Correct Answer: D) 2, 4-D. 3. The flower ..... for the plant. A) Makes food. B) Makes seeds. C) Collects water and nutrients. D) Does not do anything. Show Answer Correct Answer: B) Makes seeds. 4. Predict the consequence if the vascular cambium in a tree was damaged in a complete circle around the trunk: A) The tree would grow more leaves to compensate. B) The transport of water and nutrients would be disrupted, likely killing the tree. C) The tree would only grow taller but not wider. D) The bark would become thicker to protect the tree. Show Answer Correct Answer: B) The transport of water and nutrients would be disrupted, likely killing the tree. 5. Compare parenchyma and sclerenchyma:which statement is true? A) Parenchyma cells are usually dead at maturity. B) Sclerenchyma cells provide mechanical support to mature plant parts. C) Collenchyma cells are the only living ground tissues. D) Sclerenchyma is involved in photosynthesis. Show Answer Correct Answer: B) Sclerenchyma cells provide mechanical support to mature plant parts. 6. The fruits can be left on the tree longer using GA so as to extend the market period. This is due to which function of GA? A) Bolting. B) Delaying senescence. C) Internodal elongation. D) Inducing parthenocarpy. Show Answer Correct Answer: B) Delaying senescence. 7. Assertion:Auxins help to prevent fruits and leaves drop at early stages.Reason:Auxins promote the abscission of older mature leaves and fruits. A) Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. B) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion. C) Assertion is true but Reason is false. D) Both Assertion and Reason are false. Show Answer Correct Answer: B) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion. 8. Organic compound synthesized in one part of a plant and translocated to another part where, in very low concentrations, it causes a physiological response. A) Tropism. B) Edaphic. C) Plant hormone. D) Exogenous rhythms. Show Answer Correct Answer: C) Plant hormone. 9. Stomatal closure is caused by A) Florigen. B) Gibberellin. C) Auxin. D) Abscisic acid. Show Answer Correct Answer: D) Abscisic acid. 10. There are two types of vascular tissue in plants. This one delivers nutrients from the leaves to the rest of the plant. A) Phloem. B) Xylem. C) All the above. D) None of the above. Show Answer Correct Answer: A) Phloem. 11. Water is important for plants because it maintains the pressure within plants' cells. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. In the 'Zone of Cell Differentiation, ' cells: A) Become smaller in size. B) Are all identical in structure. C) Become specialized tissues like guard cells or xylem vessels. D) Only undergo mitosis. Show Answer Correct Answer: C) Become specialized tissues like guard cells or xylem vessels. 13. Fruit damage are cause by? A) Female flies and maggots. B) Wasps. C) Flies. D) Moths. Show Answer Correct Answer: A) Female flies and maggots. 14. It is the exterior part of a flower that protect the interior while it emerges. A) Petal. B) Sepal. C) Pistil. D) Stamen. Show Answer Correct Answer: B) Sepal. 15. Meristem tissue consist of dividing active cells. below are the characteristic of these cells ..... except A) Small nucleus. B) Small vacuole. C) Thin cell wall. D) Large cytoplasm. Show Answer Correct Answer: A) Small nucleus. 16. Perkembangan merupakan proses menuju kedewasaan. Kedewasaan pada tumbuhan ditandai dengan ..... A) Batang semakin membesar. B) Berbunga dan berbuah. C) Muncul tunas di ketiak daun. D) Kulit batang mengelupas. E) Daun berguguran. Show Answer Correct Answer: B) Berbunga dan berbuah. 17. Phototropins are the main protoreceptors responsible for ..... ? A) Gravity. B) Light detection. C) Absorption. D) Menerals and nutrients. Show Answer Correct Answer: B) Light detection. 18. Which one is stress hormone- A) ABA. B) C$_{2}$H$_{4}$. C) GA$_{7}$. D) IAA. Show Answer Correct Answer: A) ABA. 19. What is the primary function of a plant's fruit? A) To absorb sunlight. B) To store water. C) To produce flowers. D) To protect and disperse seeds. Show Answer Correct Answer: D) To protect and disperse seeds. 20. The formation of 'heartwood' (darker wood) occurs when: A) The secondary phloem dies. B) Old secondary xylem is filled with resin and oil and no longer conducts water. C) The cork layer becomes too thick. D) The primary xylem starts dividing again. Show Answer Correct Answer: B) Old secondary xylem is filled with resin and oil and no longer conducts water. 21. What is the primary function of meristem tissues in plants? A) Water storage. B) Nutrient absorption. C) Cell division and growth. D) Photosynthesis. Show Answer Correct Answer: C) Cell division and growth. 22. The plant process by which all food is manufactures is: A) Absorption. B) Photosynthesis. C) Respiration. D) Translocation. Show Answer Correct Answer: B) Photosynthesis. 23. A student did the experiment about the effect of light to plant growth. She put one plant in dark place and the other in the light place. After 4 days, she found that the plant in the dark place grow taller than in the light one. What the name of this phenomenon and which plant hormone involved? A) Etiolation and auxin. B) Etiolation and abscisic acid. C) Epiolation and auxin. D) Epiolation and abscisic acid. Show Answer Correct Answer: A) Etiolation and auxin. 24. What is the function of leaves in plants? A) To store water. B) To produce fruits and seeds. C) To transport water and nutrients. D) To absorb sunlight. Show Answer Correct Answer: D) To absorb sunlight. 25. What is the term for the energy compounds such as oils and proteins produced by plants? A) Oxidates. B) Photosynthates. C) Transpirates. D) Respirates. Show Answer Correct Answer: B) Photosynthates. ← 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books