Question:
Which of the following features of plants is not helpful in adapting to desert life?
Which of the following features of plants is not helpful in adapting to desert life?
Updated On: Apr 17, 2024
- Presence of sunken stomata
- Absence of trichomes on leaf surface
- Presence of thick cuticle on the leaf surface
- Leaves modified into spines
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The Correct Option is B
Solution and Explanation
Due to the less availability of water, the desert plants have modified themselves in order to prevent any water loss from its surface. The thick cuticle leaves modified as a spine and sunken stomata ensure that the rate of transpiration is reduced. Trichomes are tiny hair-like structures present on the epidermis. Their functions include defence against insects, protection from excessive transpiration and high heat. Some trichomes modify to function as glands to secrete essential oils and resins. Hence, their absence is not helpful in adapting to desert life.
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Concepts Used:
Transpiration
The process by which the plant body releases water in the form of vapors through its aerial portions is known as transpiration. The evaporation of water from the plant portion is also known as transpiration. It is a crucial function in plants that aids other processes and maintains water and nutrient balance. It provides a number of benefits for the plant's body.
Types of Transpiration:
There are three different types of transpiration in plants:
- Stomatal Transpiration: It is the evaporation of water from a plant's stomata. The majority of the water from the plants is lost through transpiration. When the stomata open, the water at the surface of the leaves turns into vapor and evaporates.
- Lenticular Transpiration: Lenticels are tiny openings in the bark of branches and twigs that allow light to pass through. Lenticular transpiration is the process of water evaporating from a plant's lenticels. Lenticels aren't found in every plant. Through lenticels, only a small amount of water is lost.
- Cuticular Transpiration: It is the evaporation of water from a plant's cuticle. The cuticle is a waxy layer that covers the surface of the plant's leaves. Cuticular transpiration loses about 5-10 percent of the water from the leaves. More water is transpired via the cuticles during dry conditions when the stomata are closed.