Question

The loss of water from the plants is known as
A. Respiration
B. Transpiration
C. Replication
D. Ascent of sap

Answer 1

Hint: Besides giving food and oxygen plants have many other essential properties useful for the environment. One of such properties is the loss of water that involves directly with the water cycle.

Complete Answer:
- Plants lose gallons of water each day through evaporating the water from plants primarily by the leaves pores. This process of loss of water through evaporation is termed a transpiration process.
- The plants that are growing actively evaporate water continuously from the surface of leaf cells. As we all know the water is absorbed by the roots from soil and extended to the leaf cells surfaces and there it gets converted from liquid to gas through evaporation.
- The water has the cohesive property that involves the pulling of water up through the plant as water molecules are evaporating at the leaf surface. This process is considered as the Cohesion theory of sap ascent.
- Now, the transpiration process involves the carrying of moisture through the roots to the small pores on the leaves underside, where it forms into vapour and is released to the atmosphere. It helps the plants to cool, changes the osmotic pressure and allows the mass flow of minerals, nutrients and water to shoot from the roots.

Thus, the correct option is ‘B’. Transpiration.

Note: Respiration is the process of exchange of gases from the environment; the plants inhale the carbon dioxide which gets converted into oxygen and releases into the atmosphere. The replication is the process in which DNA is replicated to form two daughter DNA, therefore, both the processes are not related to water loss of plants.