Exchange systems in plants Flashcards
1
Q
How does carbon dioxide enter and leave a plant?
A
Diffusion
2
Q
How are most water and ions absorbed buy plants?
A
Their roots
3
Q
How is the surface area of plants roots increased?
A
Root hair cells
4
Q
How is the surface area of the plants leaves increased?
A
Their flattened shape and internal air spaces
5
Q
What do the stomata do in a plant?
A
To obtain carbon dioxide from the atmosphere and to remove the oxygen produced in photosynthesis
6
Q
How do plants mainly lose water vapor?
A
Their leaves through the stomata
7
Q
When do stomata close to prevent wilting?
A
When a plant is losing more water than is being replaced by the roots.
8
Q
When is evaporation more rapid?
A
In hot, dry and windy conditions
9
Q
What controls the size of the stomata?
A
The guard cells
