Transpiration

Question 1

What is the transpiration stream?

Answer 1

It is the movement of the water through the plant

Question 2

When could a plant dehydrate?

Answer 2

If the rate of evaporation in the leaves is greater than the water up taken by the roots

Question 3

What are the adaptations of a plant to prevent excessive water loss?

Answer 3

Guard cells, which control the size of the stomata

Wilting of the whole plan can reduce water lose. The leaves collapse and hang down, which reduces the surface area

Question 4

What can a photometer be used to show?

Answer 4

The uptake of water by a plant changes with different conditions. This gives you a good idea of the amount of water lost by transpiration

Question 5

By what process does water vapour mover out of the leaf?

Answer 5

Diffusion

Question 6

What happens after the water is taken into the plant by the roots?

Answer 6

The water passes through the plant to the leaves. In the leaves the water evaporates form the leaf cells and the water vapour diffuses put through the stomata