Question

Foliar transpiration
A. Including stomata and cuticular transpiration
B. Does not occur
C. Includes all type of transpiration
D. Shows stomatal transpiration

Answer 1

Transpiration is the process of exhalation of water vapor by stomata. Water loss is performed by pore-like structure in the plant and tiny pores on leaves. Foliar transpiration is the process where the transpiration occurs at the foliar surface or the leaves. Transpiration has three types. They are stomatal, cuticular and lenticular transpiration. Sometimes back transpiration will also happen. It is the process of losing the water and producing water vapor.

Complete explanation:
Option A: Cuticular transpiration occurs at the outer part of the epidermis. It is called cuticle. If the transpiration occurs at the stomata then the transpiration is known as the stomata transpiration. It is the minute opening on the epidermis of leaves and stems. Foliar transpiration occurs at ninety percent of the total transpiration. So it is the combination of stomata and cuticular transpiration. Option A is correct.
Option B: Foliar transpiration occurs and it is performed in cuticles and stomata. In stomatal transpiration pores are involved for the transpiration process. But maximum transpiration occurs only in the stomata. Option B is incorrect.
Option C: Cuticular and stomata transpiration is the main and important transpiration. Transpiration occurs at this part only. So it doesn't contain lenticel transpiration. Option C is incorrect.
Option D: Foliar transpiration is not only the stomatal transpiration but also includes the cuticular transpiration. Option D is incorrect.

Therefore, Option A is the correct answer.

Note:
Water is warmed by the sun and changed into the water vapor. This water vapor passed through the thousands of pores in the leaves surface or underside of the leaves called stomata. Two important functions performed by the transpiration are cooling the plant and pumping waters and minerals to the leaves. It is used for the photosynthesis process. Foliar application is feeding of the liquid fertilizer directly to the leaves. It is a good one for growth but it is not a good substitute for healthy soil.