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Class 11 Biology: Plant Growth and Development
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MCQs on plants growth and development, differentiation, dedifferentiation and redifferentiation, growth regulators in plants, photoperiodism and vernalisation.

Class 11 Biology: Plant Growth and Development
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25 Questions

1. The hormone responsible for apical dominance is________
2. What is the first step in the process of plant growth?
3. The source of hormone ethylene is________
4. Which of the following is not the characteristics of the cells of the phase of elongation?
5. Vacuolization and development of end wall perforation in sieve tube elements are examples of _______
6. Which of the crops doesn't show vernalisation?
7. Which of the following hormone promotes bolting?
8. Which of the following phenomena includes all the changes undergone by a living plant from seed emergence to death?
9. Unlimited growth of the plant, is due to the presence of which of the following?
10. The growth rate is generally of how many types?
11. Which of the following is the process undergone by plants in order to attain maturity?
12. Which of the following is essential for the growth of the plants?
13. Who isolated the hormone auxin?
14. One single maize root apical meristem can give rise to how many new cells per hour?
15. Richmond Lang effect is linked to ________
16. The hormone responsible for flowering is ________
17. Which of the following is the most fundamental characteristic of a living being?
18. What is meant by the absolute growth rate?
19. Which of the following is not a characteristic of the cell walls of root apex meristem?
20. Growth is a consequence of which of the following?
21. Which of the following is not an essential element for the growth of the plant?
22. The cells of tracheary elements lose their protoplasm and become dead at maturity due to the deposition of lignocellulosic secondary cell well formation. This is an example of _________
23. Which of the following curves is a characteristic of all living organisms?
24. Cells of which of the following plant organs do not undergo differentiation?
25. What is the growth rate?

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