NCERT solutions for Class 11 Biology chapter 15 - Plant Growth and Development [Latest edition]



Solutions for Chapter 15: Plant Growth and Development

Below listed, you can find solutions for Chapter 15 of CBSE, Karnataka Board PUC NCERT for Class 11 Biology.

Exercises [Pages 253 - 254]

NCERT solutions for Class 11 Biology Chapter 15 Plant Growth and Development Exercises [Pages 253 - 254]

Exercises | Q 1.1 | Page 253

Define growth

Exercises | Q 1.2 | Page 253

Define differentiation

Exercises | Q 1.3 | Page 253

Define Development,

Exercises | Q 1.5 | Page 253

Define Redifferentiation

Exercises | Q 1.6 | Page 253

Define determinate growth

Exercises | Q 1.7 | Page 254

Define Meristem

Exercises | Q 1.7 | Page 253

Define Growth rate

Exercises | Q 2 | Page 253

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

Exercises | Q 3.1 | Page 253

Describe briefly Arithmetic growth

Exercises | Q 3.2 | Page 253

Describe briefly Geometric growth

Exercises | Q 3.3 | Page 253

Describe briefly Sigmoid growth curve

Exercises | Q 3.4 | Page 253

Define De-differentiation

Exercises | Q 3.4 | Page 253

Describe briefly Absolute and relative growth rates

Exercises | Q 4 | Page 253

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.

Exercises | Q 5 | Page 254

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

Exercises | Q 6 | Page 254

Why is Abscisic acid also known as stress hormone?

Exercises | Q 7 | Page 254

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

Exercises | Q 8 | Page 254

Both a short day plant and a long day plant can flower simultaneously in a given place. Explain.

Exercises | Q 9 | Page 254

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.

Exercises | Q 10 | Page 254

Would a defoliated plant respond to photoperiodic cycle? Why?

Exercises | Q 11 | Page 254

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.

Solutions for Chapter 15: Plant Growth and Development


NCERT solutions for Class 11 Biology chapter 15 - Plant Growth and Development has the CBSE, Karnataka Board PUC Mathematics Class 11 Biology CBSE, Karnataka Board PUC solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT solutions for Mathematics Class 11 Biology CBSE, Karnataka Board PUC 15 (Plant Growth and Development) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

Further, we at provide such solutions so students can prepare for written exams. NCERT textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.

Concepts covered in Class 11 Biology chapter 15 Plant Growth and Development are Seed Germination, Phases of Plant Growth, Conditions for Plant Growth, Differentiation, Dedifferentiation and Redifferentiation, Concept of Development, Characteristics of Growth Regulators, Seed Dormancy, Vernalisation, Photoperiodism, Introduction of Plant Growth and Development, Co-ordination in Plant: Tropism in Plants, Plant Growth and Development (Questions), Plant Growth Generally is Indeterminate, Plant Growth Rate, Discovery of Plant Growth Regulators, Physiological Effects of Plant Growth Regulators.

Using NCERT Class 11 Biology solutions Plant Growth and Development exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Solutions are essential questions that can be asked in the final exam. Maximum CBSE, Karnataka Board PUC Class 11 Biology students prefer NCERT Textbook Solutions to score more in exams.

Get the free view of Chapter 15, Plant Growth and Development Class 11 Biology additional questions for Mathematics Class 11 Biology CBSE, Karnataka Board PUC, and you can use to keep it handy for your exam preparation.


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