Question

Lenticular transpiration takes place in
A. Fruits
B. Woody stem
C. Leaves
D. All of the above

Answer 1

Hint: Plants including trees have to flush out the excess water in them. There are tiny openings in them which will help them to lose water to the surrounding in the form of water vapour. These pores have other functions also but are mainly used to transpire. It has a cooling effect on the plant.

Complete answer:
What is lenticular transpiration? Lenticels are the pig openings, lens-shaped in thick stems of angiosperm trees. They are kind of large stomata. Through these pores, water can also exit in the form of water vapours. Thus it is called lenticular transpiration.

> Option A: Fruits: They do not do the transpiration. It occurs only in the leaves and woody stems of some trees. So the option is wrong. Fruits are the edible part of the plant which is formed from the embryo.
> Option B: Woody stem: The trees having huge trunks and stems have large lenticels to exchange the gases and lose the water in the form of water vapours. That carries out lenticular transpiration.

> Option C: Leaves: Leaves do the photosynthesis and transpiration both. They have small tiny openings called stomata to carry out both processes. These are present on the abaxial surface of the leaves.

Hence, The correct answer is option (B).

Note: Lenticels are not present in plants or small plants. They are the feature of the huge angiosperm trees only. Transpiration is affected by temperature, moisture, wind speed and light intensity. The loss of water via lenticels is very less and accounts for only 3% of the total water loss in them.