Growth
Chapter Name : Plant Growth And Development |
Sub Topic Code : 103_11_15_01_01 |
Topic Name : Growth |
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Sub Topic Name : Plant Growth Generally Is Indeterminate |
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Introduction
Plant growth is indeterminate as well as unique as plants have the capacity for unlimited growth throughout their life.
Real Life Question:
Do plants have an average age for death like all other living beings?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
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| Meristems | A region of plant tissue consisting of actively dividing cells forming new tissue. |
Learning aids / Gadgets
| Gadgets | How it can be used |
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| Encyclopedia | Read about plant growth. |
Places to visit :
Library
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
Growth in plants occurs chiefly at meristems where rapid mitosis provides new cells. As these cells differentiate, they provide new plant tissue. In stems, mitosis in the apical meristem of the shoot apex (also called the terminal bud) produces cells that enable the stem to grow longer and, periodically, cells that will give rise to leaves. The point on the stem where leaves develop is called a node. The region between a pair of adjacent nodes is called the internode. In roots, the cells produced by mitosis undergo a period of elongation in the direction of the axis of the root. It is at this time that they are sensitive to gravity and respond with gravitropism.