Means Of Transport
Chapter Name : Transport In Plants |
Sub Topic Code : 103_11_11_01_04 |
Topic Name : Means Of Transport |
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Sub Topic Name : Comparison Of Different Transport Processes |
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Introduction
Plants have different transport processes for movement of substances from cell to cell or from one part to other.
Pre-Requisites:
Simple diffusion, facilitated diffusion and active transport
Activity:
Study about the harmful substances which can stop these processes in plants such as pesticides. Try to study their effect on the survival of plants
Real Life Question:
How such a big tree transports the nutrients it requires for survival to all the different parts from roots to all the leaves?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Simple diffusion | Substances move from higher to lower concentration and energy is not required. |
| Facilitated diffusion | Substances move from one cell to other with the help of membrane proteins such as porins and aquaporins. No energy is required. |
| Active transport | Substances move against concentration gradient from low to high concentration with the help of membrane proteins. This requires expenditure of energy. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Observe plant tissue sections under microscope | Try to look out for pores and proteins in the sections. |
Places to visit :
Biology Laboratory or botany laboratory.
Practical examples around us
| Examples | Explainations |
|---|---|
| Plants cannot survive without these transport processes. | Plants need the nutrition to function. |
What you learn in Theory:
The various types of transport processes in plants.
What you learn in Practice:
How plants supply nutrients to each and every part of them and grow.