The process of oozing out of the fluids from a plant part is :

1. Transpiration
2. Excretion
3. Transportation
4. Exudation

Transpiration occurs:

1. More from adaxial surface of a monocot leaf
2. More from adaxial surface of a dicot leaf
3. Equal from both the surfaces of a dicot leaf
4. More from abaxial surface of a dicot leaf

The apparatus used to measure the rate of transpiration is:

1. Barometer
2. Clinostat
3. Manometer
4. Potometer

Which of the following is an external factor affecting the rate of transpiration ?

1. Number of stomata
2. Exposed surface
3. Humidity
4. Sunken stomata