This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 15 Plant Growth And Development – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 15 Plant Growth And Development Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are the essential factors that plants need for growth? A) Air, sunlight, water, space, and nutrients. B) Air, sunlight, water, soil, and fertilizer. C) Air, sunlight, water, space, and pesticides. D) Air, sunlight, water, soil, and chemicals. Show Answer Correct Answer: A) Air, sunlight, water, space, and nutrients. 2. What do plants need for successful germination? A) Soil and fertilizer. B) Water and appropriate temperature. C) Sunlight and air. D) All types of nutrients. Show Answer Correct Answer: B) Water and appropriate temperature. 3. Which pigment involved in photoperiodic change in plants? A) Anthocyanin. B) Cytochrome. C) Phytochrome. D) Chlorophyll. Show Answer Correct Answer: C) Phytochrome. 4. Electron transport system occurs in the A) Vacuole. B) Cytoplasm. C) Mitochondria. D) Chloroplast. Show Answer Correct Answer: C) Mitochondria. 5. Division of cambium inward will form ..... A) Wood. B) Leaves. C) Flowers. D) Bark. Show Answer Correct Answer: A) Wood. 6. What is the male part of a flower? A) Pistil. B) Leaf. C) Stamen. D) Stem. Show Answer Correct Answer: C) Stamen. 7. Glycolysis occur in the A) Chloroplast. B) Cytoplasm. C) Mitochondria. D) Vacuole. Show Answer Correct Answer: B) Cytoplasm. 8. A colorless, odorless reactive gas and a life-supporting component of the air. It is naturally present in air and is produced by plants in photosynthesis. A) Nitrogen. B) Hydrogen. C) Oxygen. D) Carbon Dioxide. Show Answer Correct Answer: C) Oxygen. 9. A sigmoid growth curve is characteristic of- A) Bacteria growing in culture medium. B) Organisms growing in natural habitat. C) All cells, tissue and organs. D) All. Show Answer Correct Answer: D) All. 10. A perennial plant's state of temporary metabolic inactivity. In this state the plant stops growing and conserves energy. A) Germination. B) Vigorous. C) Dormancy. D) Hardening off. Show Answer Correct Answer: C) Dormancy. 11. Hormone involved in phototropism is A) Gibberellin. B) IAA. C) Kinetin. D) 2, 4-D. Show Answer Correct Answer: B) IAA. 12. Which factor is required by the germinating seed for metabolism and is used as a part of aerobic respiration? A) Temperature. B) Oxygen. C) Light. D) Water. Show Answer Correct Answer: B) Oxygen. 13. The physiological process of fruit drop is called? A) Acids. B) Catabolic. C) Anabolic. D) Abscission. Show Answer Correct Answer: D) Abscission. 14. During which phase of growth in plants does cell division dominate? A) Formative Phase. B) Cell Enlargement and Differentiation. C) Cell Maturation. D) Elongation Phase. Show Answer Correct Answer: A) Formative Phase. 15. Apa fungsi utama dari jaringan meristem? A) Penyimpanan air. B) Penyerap nutrisi. C) Pembelahan sel. D) Fotosintesis. Show Answer Correct Answer: C) Pembelahan sel. 16. In order to increase the yield of sugarcane crop, which of the following should be sprayed? A) Cytokinin. B) Gibberellin. C) Auxin. D) Ethylene. Show Answer Correct Answer: B) Gibberellin. 17. Palnts that flower only when day length drops below a certain threshold are called . A) Photo period. B) Long day plants. C) Short day plants. D) Day neutral. Show Answer Correct Answer: C) Short day plants. 18. Photophosphorylation is the synthesis of A) DNA. B) ATP. C) ADP. D) RNA. Show Answer Correct Answer: B) ATP. 19. Where is cytokinin produced in the tissue? A) Old leaves. B) Roots. C) Secondary stem. D) Seeds. Show Answer Correct Answer: B) Roots. 20. This is a kind of plant that flowers and sets seed only once in its life. A) Monocarpic. B) Determinant. C) Indeterminant. D) Polycarpic. Show Answer Correct Answer: A) Monocarpic. 21. Simultaneous leaf senescence is found in- A) Evergreen plants. B) Biennials. C) Perennials. D) Annuals. Show Answer Correct Answer: C) Perennials. 22. What is meristematic tissue? A) Tissue consisting of fully specialized cells. B) Tissue that supports the plant body. C) Tissue consisting of dying cells. D) Tissue consisting of cells capable of division. Show Answer Correct Answer: D) Tissue consisting of cells capable of division. 23. Plants ..... with air. A) Turn carbon dioxide into oxygen. B) Always breathe. C) Turn oxygen into carbon dioxide. D) Do not do anything. Show Answer Correct Answer: A) Turn carbon dioxide into oxygen. 24. Which part does a bee NOT have? A) Pollen Sac. B) Thumbs. C) Antenna. D) Wings. Show Answer Correct Answer: B) Thumbs. 25. Which plant growth regulator promotes cell division? A) Auxin. B) Gibberellins. C) Ethylene. D) Cytokinins. Show Answer Correct Answer: D) Cytokinins. 26. The response of different organisms to environment rhythms of light and darkness is called A) Vernalisation. B) Phototropism. C) Photoperiodism. D) Photoaxis. Show Answer Correct Answer: C) Photoperiodism. 27. The more light a plant absorbs, the more photosynthesis can occur. A) Temperature. B) Light intensity. C) Wavelength. D) Carbon dioxide concentration. Show Answer Correct Answer: B) Light intensity. 28. Varieties are cultivated by humans and Cultivars occur naturally. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 29. This type of plant cell swells and deflates in order to control the gas exchange (respiration) rate? A) Plant. B) Ground. C) Dermal. D) Guard. Show Answer Correct Answer: D) Guard. 30. The impulses from CNS to skeletal muscles are relayed through A) SNS. B) Somatic neural system. C) PSNS. D) All of these. Show Answer Correct Answer: B) Somatic neural system. 31. Long day plants flower specially when the- A) Dark period is less than some critical length. B) Dark period is more than some critical length. C) Light period is lesser than some critical lengt. D) Light period is greater than some critical period. Show Answer Correct Answer: D) Light period is greater than some critical period. 32. Why do some seeds require extreme temperatures for germination? A) To break down the hard seed coat. B) To absorb more nutrients from the soil. C) To increase the amount of sunlight. D) To speed up photosynthesis. Show Answer Correct Answer: A) To break down the hard seed coat. 33. A plant hormone used for inducing morphogennesis in plant tissue culture is A) Ethylene. B) Abscicic acid. C) Cytokinins. D) Gibberellins. Show Answer Correct Answer: C) Cytokinins. 34. A-short fibres which branch repeatedly and project out of the cell body also contains nissil's granules R-these fibres are called dendrites A) A&R both true, R is correct explanation of A. B) A&R both true, but R is not correct explanation of A. C) A is true but R is false. D) Both A&R are false. Show Answer Correct Answer: A) A&R both true, R is correct explanation of A. 35. What is the function of gibberellin hormone? A) Stimulates seed germination. B) Accelerates fruit ripening. C) Inhibits apical dominance. D) Inhibits cell division. Show Answer Correct Answer: A) Stimulates seed germination. 36. The process of food Manufacture in plants. A) Transpiration. B) Respiration. C) Diffusion. D) Photosynthesis. Show Answer Correct Answer: D) Photosynthesis. 37. What is the function of the leaves in a plant? A) To support the plant. B) To absorb sunlight. C) To store food. D) To attract pollinators. Show Answer Correct Answer: B) To absorb sunlight. 38. The aleurone synthesises and secretes digestive enzymes that hydrolyse nutrients stored in the endosperm, in presence of A) Ethylene. B) Auxin. C) Cytokinin. D) Gibberellin. Show Answer Correct Answer: D) Gibberellin. 39. Which factor accelerates the growth of plants? A) Decrease in temperature. B) Increase in temperature. C) Decrease in light intensity. D) Increase in water scarcity. Show Answer Correct Answer: B) Increase in temperature. 40. Bees have a straw-like ..... A) Tongue. B) Leg. C) Antenna. D) None of the above. Show Answer Correct Answer: A) Tongue. 41. Bees help flowers by carrying ..... from flower to flower. A) Pollen. B) Nectar. C) Honey. D) None of the above. Show Answer Correct Answer: A) Pollen. 42. What is the process of water movement through a plant called? A) Respiration. B) Fertilization. C) Transpiration. D) Photosynthesis. Show Answer Correct Answer: C) Transpiration. 43. Growing plants in water without the use of soil. A) Aquaponics. B) Soil Cultivation. C) Aeroponics. D) Hydroponics. Show Answer Correct Answer: D) Hydroponics. 44. (i) Horizontal growth of seedlings, swelling of the axis and apical hook formation in dicot seedlings.(ii) Promoting senescence and abscission of leaves and flowers.(iii) Breaking seed and bud dormancy.(iv) Initiating germination in peanut seeds.(v) Sprouting of potato tubers. A) Ethylene. B) Cytokinins. C) ABA. D) GA. Show Answer Correct Answer: A) Ethylene. 45. A layer of tissue in plants that undergoes secondary growth and creates xylem and phloem. A) Cork cambium. B) Zone of elongation. C) Vascular cambium. D) Internode. Show Answer Correct Answer: C) Vascular cambium. 46. Apa proses biji berkecambah disebut? A) Perkecambahan. B) Pertumbuhan vegetatif. C) Pertumbuhan generatif. D) Pertumbuhan sekunder. Show Answer Correct Answer: A) Perkecambahan. 47. Allows seed to overcome periods that are unfavorable for seedlings established and is therefore important for plant ecology and agriculture. A) Endogenous. B) Seed dormancy. C) Bud dormancy. D) Exogenous. Show Answer Correct Answer: B) Seed dormancy. 48. What is one disadvantage of using organic fertilizers? A) They are non-toxic. B) They make the soil acidic. C) They release nutrients slowly. D) They improve soil structure. Show Answer Correct Answer: C) They release nutrients slowly. 49. Pressure inside a cell that pushes the cell membrane outward into the cell wall. This occurs when more water enters into the cell. A) Turgor. B) Photosynthesis. C) Monocarpic growth. D) Respiration. Show Answer Correct Answer: A) Turgor. 50. All plants grow from ..... A) Leaves. B) Stem. C) Seed. D) Root. Show Answer Correct Answer: C) Seed. 51. Chlorophyll pigments harvest energy ( protons ) by absorbing certain wavelengths A) ( blue-420 nm and red-660 nm are most important. B) Blue-430 red-670. C) Blue-440 red-680. D) Blue-450 red-690. Show Answer Correct Answer: A) ( blue-420 nm and red-660 nm are most important. 52. Natural cytokinins are synthesised in- A) Root apices. B) Developing shoot buds. C) Young fruits. D) All. Show Answer Correct Answer: D) All. 53. Which of the following is a short day plant? A) Radish. B) Xanthium. C) Wheat. D) Barley. Show Answer Correct Answer: B) Xanthium. 54. This is a hormone that promotes cell division in roots and shoots. A) Auxin. B) Abscisic acid. C) Ethylene. D) Cytokinin. Show Answer Correct Answer: D) Cytokinin. 55. Which process is not directly affected by auxin? A) Apical dominance and root initiation. B) Parthenocarpy. C) Synthesis of $\alpha$. D) Leaf abscission. Show Answer Correct Answer: C) Synthesis of $\alpha$. 56. Which of the following are lateral meristems? A) Leaf primordia. B) Axillary buds. C) Bundle sheaths. D) Vascular cambium. Show Answer Correct Answer: D) Vascular cambium. 57. The green colors comes from the chlorophyll in the chloroplast, the pigments absorb ..... ? A) Light energy. B) Solar light. C) Light. D) Sun light. Show Answer Correct Answer: A) Light energy. 58. Which plant structure carries water and nutrients to leaves? A) Xylem. B) Seeds. C) Roots. D) Stomata. Show Answer Correct Answer: A) Xylem. 59. The Krebs cycle occurs in the A) Chloroplast. B) Cytoplasm. C) Vacuole. D) Mitochondria. Show Answer Correct Answer: D) Mitochondria. 60. What part of the flower makes pollen? A) Anthers. B) Pistil. C) Leaves. D) None of the above. Show Answer Correct Answer: A) Anthers. ← 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 7Class 11 Biology Chapter 15 Plant Growth And Development Quiz 8Class 11 Biology Chapter 15 Plant Growth And Development Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books