Plant Growth and Development — Chapter Summary
ICSE · Class 11 · Biology
Summary of Plant Growth and Development for ICSE Class 11 Biology. Part of the ICSE Class 11 Biology syllabus.
Interactive on Super Tutor
Studying Plant Growth and Development? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.
Free trial, no card needed.
One of 10 illustrations for Plant Growth and Development in Super Tutor — alongside flashcards, concept maps and practice questions.
Overview
Plant growth and development describe the life processes through which a plant increases in size, forms new structures, and changes from a simple embryo into a mature organism. Growth is an irreversible quantitative increase in size, while differentiation is the qualitative specialisation of cells,
Key Concepts
Growth is an irreversible quantitative change
Growth is an irreversible quantitative change in size. Development is the whole series of changes an organism passes through during its life cycle. De
Growth can be measured by increase
Growth can be measured by increase in length, diameter, volume, fresh weight, dry weight, area, or cell number. Common methods include direct measurem
Growth follows a sigmoid curve
Growth follows a sigmoid curve with three phases: initial lag phase, logarithmic or exponential phase, and stationary phase. Growth is slow at first,
The increased growth per unit time
The increased growth per unit time is growth rate. Arithmetic growth follows L_t = L_0 + rt. Geometric growth follows w_1 = w_0 e^(rt). Absolute Growt
Water
Water, oxygen, nutrients, temperature, light, soil conditions, pollutants, genetic factors, and hormones influence growth. Water supports cell enlarge
Learning Objectives
- Understand growth as irreversible quantitative change and differentiation as qualitative change.
- Describe how plant growth is measured using direct methods, horizontal microscope, and auxanometers.
- Explain sigmoid growth and its three phases: lag, exponential, and stationary.
- Differentiate arithmetic growth, geometric growth, AGR, and RGR.
- Identify the external and internal factors that affect growth.
Frequently Asked Questions
What are the important topics in Plant Growth and Development for ICSE Class 11 Biology?
How should I revise Plant Growth and Development for Class 11 exams?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Plant Growth and Development
Practice Quiz
Test yourself with a quick quiz
Important Questions
Exam-style questions with answers
Revision Notes
Key points for last-minute revision
Formula Sheet
The chapter's formulas in one place
Concept Maps
See how topics connect
Study Plan
Step-by-step plan for this chapter
Flashcards
Quick-fire cards for active recall
Syllabus
What topics to cover
For serious students
Get the full Plant Growth and Development chapter — start free.
Quizzes, flashcards, an AI doubt solver and a study plan for ICSE Class 11 Biology. Free to start, no card needed.