TRANSPORT SYSTEMS
CONTENT
- Definition of Transport Systems
- The Need for Transportation
- Materials that are Transported in Plants and Animals
- Media of Transportation
- The Need for Substance to Move Over Greater Distances
- Transport Systems in Large Organisms
- Functions of the Blood
- Transport Tissues in Plants and Animals
Definition of Transport Systems
Transport system is the movement of metabolic substances from various parts of the organism where they are produced or obtained to the parts where they are either used, stored or removed from the body.
The Need for Transportation
- It aids in the removal of metabolic waste e.g carbon dioxide, water and urea
- It helps to move hormones in plants and animals from where they are produced to areas of need.
- It helps transport essential materials in organisms for metabolic process e.g nutrients, oxygen and water.
- In plants, transport is necessary to move mineral salt and water from the root to the stems and leaves.
Materials that are Transported in Animals
The materials transported in animals include:
- Water
- Digested foods (vitamins, amino acids, mineral salts, fatty acids ,glycerol)
- Gases (oxygen, carbon-dioxide)
- Excretory products (urea, carbon-dioxide, excess salt)
- Hormones (adrenalin, insulin, oestrogen etc) and other materials.
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