15. Plant Growth and Development

15. Plant Growth and Development

22 Maths Exercise Solutions

Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.

15.7 Seed Dormancy, Question No.1
Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.

Why is not any one parameter good enough to demonstrate growth throughout the life of a flowering plant?

15.7 Seed Dormancy, Question No.2
Why is not any one parameter good enough to demonstrate growth throughout the life of a flowering plant?

Describe briefly:
Geometric growth

15.7 Seed Dormancy, Question No.3
Describe briefly:
Geometric growth

Describe briefly:
Absolute and relative growth curve

15.7 Seed Dormancy, Question No.4
Describe briefly:
Absolute and relative growth curve

Describe briefly:
Arithmetic growth

15.7 Seed Dormancy, Question No.5
Describe briefly:
Arithmetic growth

Describe briefly:
Sigmoid growth curve

15.7 Seed Dormancy, Question No.6
Describe briefly:
Sigmoid growth curve

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.

15.7 Seed Dormancy, Question No.7
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.

What do you understand by photoperiodism and vernalisation? Describe their significance.

15.7 Seed Dormancy, Question No.8
What do you understand by photoperiodism and vernalisation? Describe their significance.

Why is abscisic acid also known as the stress hormone?

15.7 Seed Dormancy, Question No.9
Why is abscisic acid also known as the stress hormone?

‘Both growth and differentiation in higher plants are open’. Comment.

15.7 Seed Dormancy, Question No.10
‘Both growth and differentiation in higher plants are open’. Comment.