Page 17 - E-Biology Sec.2 2024-2025 U1_Handy

Factors affect the transpiration passively:

1- Increasing the surface area and the numbers of the leaves.
2- Increasing the stomata number.
3- Increasing the temperature.
4- Increasing the light intensity.
5- Increasing the absorption rate of water.
6- Decreasing the humidity in the atmosphere.

Importance of transpiration:

1- Decreasing the plant’s temperature:

The leaves absorb large amount of energy exceeds
their need which is converted into heat and rise the

leaf temperature especially in sunny days which
harms the protoplasm and may cause death.

Cytoplasm has cytosol and
organelles.

Protoplasm has cytoplasm
and nucleus.

Protoplast has protoplasm
and cell membrane.

Plant cell has protoplast and 16
cell wall.

Second Term