This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Biology Chapter 15 Plant Growth And Development – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 15 Plant Growth And Development Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Assertion:Nutrients are required by plants for the synthesis of protoplasm and act as source of energy.Reason:Water provides the medium for enzymatic activities needed for growth. 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. 2. ..... plays role on primary growth, while ..... plays role on secondary growth. A) Intercalary meristem, apical meristem. B) Lateral meristem; apical meristem. C) Lateral meristem; intercalary meristem. D) Apical meristem; lateral meristem. E) Apical meristem; intercalary meristem. Show Answer Correct Answer: D) Apical meristem; lateral meristem. 3. Performs photosynthesis A) Leaf. B) Root. C) Stem. D) Flower. Show Answer Correct Answer: A) Leaf. 4. The kalin that affects flower formation is called ..... A) Kaulokalin. B) Filokalin. C) Rizokalin. D) Antokalin. Show Answer Correct Answer: D) Antokalin. 5. The only plant hormone that is a gas A) Auxin. B) Gibberellin. C) Cytokinin. D) Ethylene. Show Answer Correct Answer: D) Ethylene. 6. The kalin that affects stem formation is ..... A) Rizokalin. B) Kaulokalin. C) Filokalin. D) Antokalin. Show Answer Correct Answer: B) Kaulokalin. 7. A-a synapse is formed by the membranes of pre and post synaptic neuronR-synaptic cleft may or may not be the part of synapse 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: B) A&R both true, but R is not correct explanation of A. 8. Gibberellins have many effects. Which one of the following is not an effect of gibberellins in plants? A) Bolting. B) Delay senescence. C) Increase the grapes stalk. D) Induces dormancy. Show Answer Correct Answer: D) Induces dormancy. 9. The ability of plant to follow different pathways and produce different structures in response to environment and phases of life is termed as- A) Elasticity. B) Growth efficiency. C) Plasticity. D) Heterophylly. Show Answer Correct Answer: C) Plasticity. 10. Read the given statements and select the option that correctly identifies the incorrect ones.(i) Cytokinin is primarily concerned with cell division.(ii) C2H4 breaks seed and bud dormancy(iii) ABA stimulates the opening of stomata.(iv) C2H4 initiates germination in peanut seeds, sprouting of potato tubers.(v) ABA is synergistic to GA A) (i), (ii) and (iv). B) (iii) and (ii). C) (iii) and (v). D) (iv) and (v). Show Answer Correct Answer: C) (iii) and (v). 11. Beta vulgaris is a A) Short day plant. B) Long day plant. C) Day neutral plant. D) Intermediate plant. Show Answer Correct Answer: B) Long day plant. 12. What would happen if you forget to add cytokinin to the culture medium? A) Callus will not develop shoot buds. B) Callus will not develop root buds. C) Callus will stop differentiating. D) Both (a) and (b). Show Answer Correct Answer: A) Callus will not develop shoot buds. 13. Spraying sugarcane with gibberellins increases the yield by as much as 20 tonnes per acre. GA performs it- A) By improving the quality of fruit. B) By making plants with rosette habit. C) By internodal elongation. D) By delaying senescence. Show Answer Correct Answer: C) By internodal elongation. 14. Which nutrient deficiency causes leaves to become yellow at the tips and edges? A) Calcium. B) Sulfur. C) Potassium. D) Phosphorus. Show Answer Correct Answer: C) Potassium. 15. The optimal temperature for plant growth ranges from ..... A) 5-10$^\circ$C. B) 10-15$^\circ$C. C) 16-25$^\circ$C. D) 30-35$^\circ$C. Show Answer Correct Answer: C) 16-25$^\circ$C. 16. PGRs include- A) Only growth promoters. B) Only growth inhibitors. C) Both growth promoters and growth inhibitors. D) Only solid hormones, not gaseous hormones. Show Answer Correct Answer: C) Both growth promoters and growth inhibitors. 17. What is the effect of photoperiodism on plants? A) Regulates water uptake. B) Influences seed germination. C) Controls nutrient absorption. D) Affects flowering. Show Answer Correct Answer: D) Affects flowering. 18. The process of cell division to create new cells for growth and repair of plant tissues. A) Mitosis. B) Meiosis. C) Embryogenesis. D) Germination. Show Answer Correct Answer: A) Mitosis. 19. Which environmental factors trigger the processes controlled by genes inside a seed? A) Temperature, moisture, and light. B) Temperature, soil, and water. C) Light, soil, and nutrients. D) Moisture, sunlight, and fertilizer. Show Answer Correct Answer: A) Temperature, moisture, and light. 20. Which example below is the site of primary growth that results in the plant increasing in height? A) Bud scales. B) Apical meristems. C) Nodes. D) Axillary buds. Show Answer Correct Answer: B) Apical meristems. 21. Where does photosynthesis primarily occur in a plant? A) Mesophyll layers of leaves. B) Stem epidermis. C) Roots. D) Flower petals. Show Answer Correct Answer: A) Mesophyll layers of leaves. 22. Promotes abscission of leaves and fruits, inhibits shoot elongation. A) Ethelyne. B) Ethylene. C) Etyhlyn. D) Ethyleen. Show Answer Correct Answer: B) Ethylene. 23. What is the meaning of the latin root word, 'dehiscent'. A) Closed. B) Like a snake. C) Seed. D) To split open. Show Answer Correct Answer: D) To split open. 24. Name the cellular process responsible for repair, growth, and development in living organisms. A) Meiosis. B) Mitosis. C) Transcription. D) Translation. Show Answer Correct Answer: B) Mitosis. 25. Which hormone prevents the dropping of flowers and fruits? A) Gibberellin. B) Cytokinin. C) Ethylene. D) Auxin. Show Answer Correct Answer: D) Auxin. ← 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 8Class 11 Biology Chapter 15 Plant Growth And Development Quiz 9Class 11 Biology Chapter 15 Plant Growth And Development Quiz 10Class 11 Biology Chapter 15 Plant Growth And Development Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books