This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 15 Plant Growth And Development – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 15 Plant Growth And Development Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. During which phase do cells form vacuoles and grow larger? A) Cell division. B) Cell enlargement. C) Ripening. D) Cell differentiation. Show Answer Correct Answer: B) Cell enlargement. 2. The process in which plants take in Carbon dioxide and water and produce glucose and Oxygen is called: A) Germination. B) Transpiration. C) Respiration. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 3. Statement 1:Elongation of reduced stem is possible due to application of gibberellin hormone.Statement 2:Gibberellin stimulates cell division and cell elongation. A) Both statements 1 and 2 are correct. B) Statement 1 is correct but statement 2 is incorrect. C) Statement 1 is incorrect but statement 2 is correct. D) Both statements 1 and 2 are incorrect. Show Answer Correct Answer: A) Both statements 1 and 2 are correct. 4. Which deficiency causes leaves to turn yellow while the veins remain green? A) Magnesium. B) Calcium. C) Phosphorus. D) Potassium. Show Answer Correct Answer: A) Magnesium. 5. Where does fertilization take place in a plant? A) Style. B) Anther. C) Ovary. D) Stigma. Show Answer Correct Answer: C) Ovary. 6. The set of observable characteristics of an individual resulting from the interaction of its genotype with the environment. A) Mutations. B) Chromosomes. C) Genotype. D) Phenotype. Show Answer Correct Answer: D) Phenotype. 7. The cells inside of a seed that will eventually turn into the plant's roots, shoots, and leaves. A) Phloem. B) Mitosis. C) Meristems. D) Embryo. Show Answer Correct Answer: D) Embryo. 8. Tahap perkembangan tanaman yang ditandai dengan pembentukan bunga disebut ..... A) Fase vegetatif. B) Fase generatif. C) Fase embrionik. D) Fase perkecambahan. Show Answer Correct Answer: B) Fase generatif. 9. This is NOT a type of specialized plant cell but an unspecialized cell capable of dividing indefinitely. A) Sclerenchyma. B) Collenchyma. C) Parenchyma. D) Meristem. Show Answer Correct Answer: D) Meristem. 10. Which of the following is the anti ageing plant hormone? A) IAA. B) ETHYLENE. C) CYTOKININS. D) GIBBERELLINS. Show Answer Correct Answer: C) CYTOKININS. 11. Bulbs have a rounded shape, narrower towards the top, and a flat base called? A) Morphological differentiation. B) Basal flate. C) Plate. D) Bud scales. Show Answer Correct Answer: B) Basal flate. 12. Cytokinins and ethylene have opposite effects on- A) Elongation of stem. B) Lateral swelling of stem. C) Leaf senescence. D) Winter dormancy. Show Answer Correct Answer: C) Leaf senescence. 13. 3 terms-Inhibitor-B, Abscission II and Dormin are used for the same hormone. That hormone is- A) GA. B) ABA. C) Auxin. D) C$_{2}$H$_{4}$. Show Answer Correct Answer: B) ABA. 14. Why is water important for plant growth? A) It strengthens the plant and helps resist drought. B) It helps transport food and nutrients. C) It creates cell walls in plant cells. D) It allows the plant to flower. Show Answer Correct Answer: B) It helps transport food and nutrients. 15. Day neutral plant relates to A) Loss of activity during day time. B) Overactive during day time. C) Flowering in all possible photoperiods. D) No flowering in any photoperiod. Show Answer Correct Answer: C) Flowering in all possible photoperiods. 16. An essential element needed in plant development that helps the plant grow and build disease resistance. A) Calcium. B) Phosphorus. C) Potassium. D) Nitrogen. Show Answer Correct Answer: C) Potassium. 17. Justify the statement:'Primary growth and secondary growth are complementary processes.' A) Primary growth provides height, while secondary growth provides the support to maintain that height. B) They both occur in the same meristematic tissue. C) Primary growth happens only after secondary growth is finished. D) They both increase the diameter of the root only. Show Answer Correct Answer: A) Primary growth provides height, while secondary growth provides the support to maintain that height. 18. When compared to the amount of oxygen produces in the process of photosynthesis, the amount of oxygen used in plant respiration is: A) Less. B) Much more. C) More. D) About the same. Show Answer Correct Answer: A) Less. 19. Not only cause the plant to wilt but also limits the quantity of carbon dioxide. A) Lack of nutrients. B) Water supply. C) Lack of energy. D) Lack of water. Show Answer Correct Answer: D) Lack of water. 20. What helps transport water through the plant? A) Seeds. B) Leaves. C) Stomata. D) Xylem vessels. Show Answer Correct Answer: D) Xylem vessels. 21. Uptake of dissolved minerals is done by ..... ? A) Diffusion. B) Translocation. C) Transport. D) Active transport. Show Answer Correct Answer: D) Active transport. 22. State of suspended growth . A) Lack of germination. B) Dormancy. C) Climate conditions. D) Die back. Show Answer Correct Answer: B) Dormancy. 23. Fruits produce gaseous compound is called. A) Ethylene. B) Calboro. C) Ethrel. D) Abscission. Show Answer Correct Answer: A) Ethylene. 24. When is the ideal time to transplant seedlings? A) After they are tall. B) When the first true leaves appear. C) When they flower. D) None of the above. Show Answer Correct Answer: B) When the first true leaves appear. 25. What sticks to the bees hairy body? A) Nectar. B) Pollen. C) Petals. D) None of the above. Show Answer Correct Answer: B) Pollen. 26. Which of the following is a potent weedicide? A) 2, 4-D. B) TIBA. C) IPA. D) BAP. Show Answer Correct Answer: A) 2, 4-D. 27. 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. 28. 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. 29. 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. 30. 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. 31. 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) Edaphic. B) Exogenous rhythms. C) Tropism. D) Plant hormone. Show Answer Correct Answer: D) Plant hormone. 32. Stomatal closure is caused by A) Abscisic acid. B) Auxin. C) Florigen. D) Gibberellin. Show Answer Correct Answer: A) Abscisic acid. 33. 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. 34. 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. 35. 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. 36. 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. 37. It is the exterior part of a flower that protect the interior while it emerges. A) Pistil. B) Petal. C) Sepal. D) Stamen. Show Answer Correct Answer: C) Sepal. 38. 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. 39. Perkembangan merupakan proses menuju kedewasaan. Kedewasaan pada tumbuhan ditandai dengan ..... A) Batang semakin membesar. B) Kulit batang mengelupas. C) Berbunga dan berbuah. D) Daun berguguran. E) Muncul tunas di ketiak daun. Show Answer Correct Answer: C) Berbunga dan berbuah. 40. 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. 41. Which one is stress hormone- A) IAA. B) ABA. C) C$_{2}$H$_{4}$. D) GA$_{7}$. Show Answer Correct Answer: B) ABA. 42. 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. 43. 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. 44. 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. 45. The plant process by which all food is manufactures is: A) Respiration. B) Absorption. C) Translocation. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 46. 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. 47. What is the term for the energy compounds such as oils and proteins produced by plants? A) Photosynthates. B) Respirates. C) Oxidates. D) Transpirates. Show Answer Correct Answer: A) Photosynthates. 48. The thylakoids contain ..... ? A) Chlorophyll. B) Green pigments. C) Chloroplast. D) Chlorine. Show Answer Correct Answer: A) Chlorophyll. 49. Which hormone causes internodes to lengthen? A) Cytokins. B) Etiolation. C) Gibberelins. D) Tropism. Show Answer Correct Answer: C) Gibberelins. 50. Controls guard cells A) Gibberellin. B) Cytokinin. C) Abscisic acid. D) Auxin. Show Answer Correct Answer: C) Abscisic acid. 51. In flowering plants, double fertilisation happens when ..... A) One male gamete fuses with the egg cell and another male gamete fuses with two polar nuclei. B) One male gamete fuses with two egg cells and another male gamete fuses with one polar nucleus. C) Two male gamete fuses with two egg cells. D) Two male gamete fuses with two polar nuclei. Show Answer Correct Answer: A) One male gamete fuses with the egg cell and another male gamete fuses with two polar nuclei. 52. Which hormone is in gas form? A) Cytokinin. B) Gibberellin. C) Ethylene. D) Auxin. Show Answer Correct Answer: C) Ethylene. 53. What replaces the epidermis when it cracks during secondary growth? A) Pith. B) Cork layer. C) Primary xylem. D) Sclerenchyma. Show Answer Correct Answer: B) Cork layer. 54. Weakening, opening, or otherwise altering the seed's coat in order to promote germination. A) Stratification. B) Hybridization. C) Hardening off. D) Scarification. Show Answer Correct Answer: D) Scarification. 55. Growth of plant part toward the stimulus A) A. positive tropism. B) B. negative tropism. C) All the above. D) None of the above. Show Answer Correct Answer: A) A. positive tropism. 56. Plant growth regulators can be both ..... and ..... A) Inhibiting, dormant. B) Synthetic, helpful. C) Hard, soft. D) Natural, synthetic. Show Answer Correct Answer: D) Natural, synthetic. 57. Environmental heterophylly is seen in- A) Ranunculus (Buttercup). B) Cotton. C) Coriander. D) Larkspur. Show Answer Correct Answer: A) Ranunculus (Buttercup). 58. It occurs due to chemical changes with in the seeds embryo A) Exogenous. B) Seed dormancy. C) Bud dormancy. D) Endogenous. Show Answer Correct Answer: D) Endogenous. 59. Formulate a hypothesis:Why do trees in tropical rainforests often lack distinct annual rings? A) The bark is too thick to see the rings. B) They only have primary xylem. C) They do not undergo secondary growth. D) The climate is consistent year-round, leading to uniform growth of secondary xylem. Show Answer Correct Answer: D) The climate is consistent year-round, leading to uniform growth of secondary xylem. 60. Which tissue is responsible for the growth of a plant from a seedling to an adult? A) Epidermal tissue. B) Meristematic tissue. C) Permanent tissue. D) Ground tissue. Show Answer Correct Answer: B) Meristematic tissue. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books