Transpiration 

1. Loss of water in soil 

2. Loss of minerals in soil 

3. Loss of water to the air from the leaves 

4. Loss of organic substances because of photorespiration 

Transpiration is very important for plants because it helps in 

1. the absorption of water from soil

2. the cooling of leaves at high temperature

3. the movement of water and minerals absorbed by roots to various parts of the plant

4. all of the above

Guttation is the result of:
1. Root pressure
2. Diffusion
3. Transpiration
4. Osmosis

Loss of water in liquid phase from the margin of leaves in many herbaceous plants is/occurs

1. Guttation

2. Transpiration

3. At noon

4. Due to cohesion-tension model of water movement.

Transpiration is affected by internal factors

Find the wrong one

Stomata opens:

(1) in day time - for gaseous exchange

(2) in day time - no gaseous exchange

(3) in night time only - for gaseous exchange

(4) in night time only - no gaseous exchange

What percent of water reaching them is used by leaves in photosynthesis?

1. Less than 1%
2. About 5 %
3. About 5 % in warm conditions and about 10 % in cold conditions
4. About 50 %

Transpiration is affected by external factors

Find the wrong one.

Transpiration can be studied by

Root pressure