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Plant Transport | Definitions
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Plant Transport | Definitions
Active Transport
The movement of substances against their concentration gradient from an area of lower concentration to an area of higher concentration. This process requires energy in the form of ATP.
Adhesion
Adhesion refers to different molecules sticking to each other. Water molecules stick to the sides of the xylem tube as they move up the plant.
Autotroph
An organism that can make its own food.
Cohesion
Similar molecules sticking to each other. Water molecules stick to each other as they move up the xylem.
Osmosis
The movement of water from an area of higher concentration to an area of lower concentration across a semi-permeable membrane.
Tension
A pulling force. In the tension-cohesion model, the tension pulls the stream of water upwards.
Transpiration
This is the evaporation of liquid water into water vapour through the stomata on the underside of leaves. This results in upward movement of water through a plant.
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Active Transport
The movement of substances against their concentration gradient from an area of lower concentration to an area of higher concentration. This process requires energy in the form of ATP.
Adhesion
Adhesion refers to different molecules sticking to each other. Water molecules stick to the sides of the xylem tube as they move up the plant.
Autotroph
An organism that can make its own food.
Cohesion
Similar molecules sticking to each other. Water molecules stick to each other as they move up the xylem.
Osmosis
The movement of water from an area of higher concentration to an area of lower concentration across a semi-permeable membrane.
Tension
A pulling force. In the tension-cohesion model, the tension pulls the stream of water upwards.
Transpiration
This is the evaporation of liquid water into water vapour through the stomata on the underside of leaves. This results in upward movement of water through a plant.