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id: "66f1462b0821118bf5c5e5a1"
title: "Plant Growth and Development"
board: "CBSE"
curriculum: "CBSE"
class: "Class 11"
subject: "Biology"
book: "Biology"
chapter: "Plant Growth and Development"
chapter_slug: "plant-growth-and-development"
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---

# Plant Growth and Development
This chapter explores the process of plant growth and development, focusing on the transformation from a zygote to a mature plant. It discusses the order of development of various plant structures and the factors influencing growth.

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## Knowledge Snapshot

| Field | Details |
| :--- | :--- |
| Class | Class 11 |
| Subject | Biology |
| Book | Biology |
| Chapter | Plant Growth and Development |
| Pages | 166-180 |

---

## Chapter Summary

### Short Summary
The chapter covers the processes of growth and differentiation in plants, detailing how various structures emerge from a zygote and the importance of environmental factors.

### Detailed Summary
The development of a mature plant from a zygote follows highly ordered processes resulting in the formation of roots, stems, leaves, flowers, fruits, and seeds. Growth begins with seed germination, which occurs under favourable conditions; otherwise, seeds enter a dormant state. The chapter also examines intrinsic and extrinsic factors that influence plant development.

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## Topic-Wise Explanation

### Growth
Growth in plants involves an increase in size and mass, beginning from the zygote and progressing through stages to produce distinct organs.

### Differentiation, Dedifferentiation and Redifferentiation
This topic discusses how plant cells specialize into different types, altering their structure and function, and how some can revert to earlier states or change functions.

### Development
Development encompasses both growth and differentiation, outlining the sequential processes that lead to a mature plant.

### Plant Growth Regulators
[Omitted as context does not provide specific information on plant growth regulators.]

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## Character Analysis
[Omitted as there are no characters in the context provided.]

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## Core Ideas

| Idea | Explanation |
| :--- | :--- |
| Development | The combination of growth and differentiation leading to the formation of various plant structures from the zygote. |

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## Key Concepts

| Concept | Meaning |
| :--- | :--- |
| Zygote | The fertilized egg from which all plant cells originate. |
| Germination | The process by which a seed develops into a new plant under favorable conditions. |

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## Important Points for Revision
* The development of a plant involves growth and differentiation.
* Seed germination is the first critical step in plant growth.
* Plants grow in height and girth over time, yet certain structures appear intermittently.
* Environmental conditions trigger seed germination and growth resumption.
* All plant cells are descendants of the zygote, leading to diverse structures and functions.
* Development follows a precise sequence of events to produce various plant structures.
* Intrinsic and extrinsic factors significantly influence developmental processes.
* Structures like leaves and flowers have limited dimensions and seasonal patterns.

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## Vocabulary and Glossary

| Word / Phrase | Meaning |
| :--- | :--- |
| Seedling | A young plant that develops from a seed. |
| Plantlet | A small plant that is developed from a part of a larger plant. |
| Mature plant | A fully developed plant capable of reproduction. |

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## Practice Questions

### Short Answer Questions
1. What is the first step in the process of plant growth?
2. How do seeds respond to unfavorable environmental conditions?
3. Explain the term 'differentiation' in the context of plant development.
4. What are the main factors governing plant growth development?
5. Describe the relationship between plant cells and the zygote.

### Long Answer Questions
1. Discuss the stages of development a plant undergoes from zygote to maturity.
2. Explain the significance of environmental factors in seed germination and subsequent growth.
3. Analyze how differentiation impacts the structure and function of plant tissues.

---

## Related Concepts
[Omitted as no directly supported concepts are available in the context provided.]

---

## Source Attribution

| Field | Value |
| :--- | :--- |
| Source | Edzy |
| Reference Type | examSubjectBookChapter |
| Reference ID | 66f1462b0821118bf5c5e5a1 |
| Canonical URL | https://www.edzy.ai/cbse-class-11-biology-plant-growth-and-development |
| Markdown URL | https://www.edzy.ai/okf/chapter/cbse-class-11-biology-plant-growth-and-development.md |