AP BIOLOGY

PLANTS

TRANSPORT IN PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statements are true of transpiration
A
it draws water up the stem
B
it draws dissolved salts up the stem
C
it draws food up the stem
D
it has a cooling effect on the leaves
E
it speeds up photosynthesis
Explanation: 

Detailed explanation-1: -Plants also cool the landscape directly through the process known as transpiration. When the surrounding atmosphere heats up, plants will often release excess water into the air from their leaves. By releasing evaporated water, plants cool themselves and the surrounding environment. “It’s like sweating.

Detailed explanation-2: -The correct option is A True. Transpiration: It is the process of water loss in the form of water vapor from the aerial parts of the plants, such as leaves.

Detailed explanation-3: -Transpiration is the loss of water in form of water vapours through aerial parts of the leaf. It helps in drawing water from the roots to the leaves and also produces the cooling effect.

Detailed explanation-4: -Some of the water drawn up through the roots exits the plant through pores – or stomata-in its leaves, hence the sweating.As this ”sweat” evaporates, heat is removed from the air, providing a cooling effect.

There is 1 question to complete.