process of transpiration in plants

Question 1

What is transpiration

Answer 1

Transpiration is the loss of water vapor from plant leaves through tiny openings called stomata.

Question 2

What causes transpiration

Answer 2

Water evaporates from the surface of leaf cells and escapes through stomata into the air.

Question 3

What is the transpiration stream

Answer 3

It’s the continuous movement of water from the roots, up the stem, to the leaves where it evaporates.

Question 4

How does water move in the transpiration stream

Answer 4

Roots absorb water from the soil.

Water travels up through xylem vessels.

Water reaches leaves and evaporates through stomata.

Question 5

Why is transpiration important for plants?

Answer 5

Cools the plant

Draws water and minerals up from the roots

Keeps water moving for photosynthesis

Question 6

How do stomata control transpiration

Answer 6

Stomata open to let gases in for photosynthesis, but water escapes too. They can close to reduce water loss.