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(Link of Pdf File is given below at the end of the Questions list)
Question 1:
Define growth, differentiation, development, dedifferentiation, redifferentiation,
determinate growth, meristem and growth rate.
Question 2:
Why is not any one parameter good enough to demonstrate growth throughout the
life of a flowering plant?
Question 3:
Describe briefly:
(a) Arithmetic growth
(b) Geometric growth
(c) Sigmoid growth curve
(d) Absolute and relative growth rates
Question 4:
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.
Question 5:
What do you understand by photoperiodism and vernalisation? Describe their
significance.
Question 6:
Why is Abscisic acid also known as stress hormone?
Question 7:
‘Both growth and differentiation in higher plants are open’. Comment.
Question 8:
‘Both a short day plant and a long day plant can flower simultaneously in a given
place’. Explain.
Question 9:
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.
Question 10:
Would a defoliated plant respond to photoperiodic cycle? Why?
Question 11:
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.
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