transpiration

What is transpiration in plants?

Transpiration is the process by which plants lose water in the form of vapor from their aerial parts.

What is the cooling effect of transpiration?

Transpiration helps cool the plant by evaporating water from leaves, similar to how sweating cools animals.

How does transpiration assist in nutrient distribution?

Transpiration creates a transpiration pull, aiding in the upward movement of water and dissolved minerals from roots to the plant.

What is turgor pressure?

Turgor pressure is the pressure of water within the plant cells, necessary for rigidity and proper functioning.

What percentage of transpiration is stomatal?

Stomatal transpiration accounts for about 90-95% of total transpiration.

What primarily influences the opening of stomata?

The opening of stomata is influenced by light intensity, carbon dioxide concentration, and water availability.

What is the role of potassium ions in stomatal transpiration?

Potassium ions help regulate osmotic pressure in guard cells, facilitating the opening and closing of stomata.

What adaptations do plants in arid environments have to reduce transpiration?

Adaptations include a thick cuticle, sunken stomata, reduced leaf area, leaf orientation, and CAM photosynthesis.

How does humidity affect transpiration rates?

High humidity reduces transpiration rates because the air is already saturated with water vapor.

What is the objective of the experiment demonstrating transpiration?

The aim is to demonstrate that transpiration occurs in plants.