Class 11 Biology - Chapter Plant Growth and Development NCERT Solutions | Both growth and differentiation in highe
Welcome to the NCERT Solutions for Class 11th Biology - Chapter Plant Growth and Development. This page offers a step-by-step solution to the specific question from Excercise 1 , Question 7: both growth and differentiation in higher plants a....
Question 7
Both growth and differentiation in higher plants are open. Comment.
Answer
Growth and development in higher plants is referred to as being open. This is because various meristems, having the capacity for continuously dividing and producing new cells, are present at different locations in these plant bodies.
More Questions From Class 11 Biology - Chapter Plant Growth and Development
- Q:- What would be expected to happen if:
(a) GA3 is applied to rice seedlings
(b) Dividing cells stop differentiating
(c) A rotten fruit gets mixed with unripe fruits
(d) You forget to add cytokinin to the culture medium. - Q:- Describe briefly:
(a) Arithmetic growth
(b) Geometric growth
(c) Sigmoid growth curve
(d) Absolute and relative growth rates - Q:- What do you understand by photoperiodism and vernalisation? Describe their significance.
- Q:- Why is Abscisic acid also known as stress hormone?
- Q:- Which one of the plant growth regulators would you use if you are asked to:
(a) Induce rooting in a twig
(b) Quickly ripen a fruit
(c) Delay leaf senescence
(d) Induce growth in axillary buds
(e) Bolt a rosette plant
(f) Induce immediate stomatal closure in leaves. - Q:- List five main groups of natural plant growth regulators. Write a note on discovery, physiological functions and agricultural/horticultural applications of any one of them.
- Q:- Both a short day plant and a long day plant can flower simultaneously in a given place. Explain.
- Q:- Would a defoliated plant respond to photoperiodic cycle? Why?
- Q:- Define
(a) Growth
(b) Differentiation
(c) Development
(d) De differentiation
(e) Re differentiation
(f) Determinate growth
(g) Meristem
(h) Growth rate. - Q:- Why is not any one parameter good enough to demonstrate growth throughout the life of a flowering plant?
Popular Questions of Class 11 Biology
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- Q:-
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(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:- What are macromolecules? Give examples.
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1 Comment(s) on this Question
Spoorthi c t
2019-11-10 18:49:52
bcz in plants meristem is present on shoot. The meristm contnuously divide and increase in length or girth. So both are open
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