Question

Differentiate between guttation and transpiration.

Answer 1

Definition:

• Guttation is the process of loss of water in the form of liquid drops from the edges of leaves.
• Transpiration is the process of loss of water in the form of water vapour from the aerial part of plants.

Occurrence:

• Guttation occurs early morning or at night when the humidity and root pressure is high.
• Transpiration occurs in the daytime.

Structures involved :

• Guttation occurs through hydathodes found at the margin of the leaves
• Transpiration can take place through stomata, lenticels, bark and cuticles.

Loss of water:

• In guttation, the water is lost in the form of liquid.
• In transpiration, the water is lost in the form of vapours.

Observed in plants:

• Guttation is observed in herbaceous plants.
• Transpiration is observed in terrestrial and herbaceous plants.

Summary:

Criteria	Guttation	Transpiration
Definition	Guttation is the process of loss of water in the form of liquid drops from the edges of leaves.	Transpiration is the process of loss of water in the form of vapours from the aerial part of plants.
Occurrence	It occurs early in the morning or at night.	It occurs in the daytime.
Structures involved	Occurs through hydathodes found at the margin of the leaves.	Through stomata, lenticels, bark and cuticles.
Loss of water	The water is lost in the form of liquid.	The water is lost in the form of vapours
Observed in plants	It is seen in herbaceous plants.	It is seen in terrestrial plants and herbaceous plants.