Correct option is B
Solution
The correct answer is
Cactus.
Concept:
Stomata
· The Stomata are openings in the epidermis of most of the aerial parts of the plants, especially the leaves.
· Stomata
regulate the process of transpiration and
gaseous exchange.
· Stomata consists of two bean-shaped cells known as
guard cells.
· It regulates the
opening and closing of stomata.
Explanation:
· The cactus is a desert or a succulent plant that can live under harsh circumstances.
· The
stomata present in the cactus close during the day and open only at night.
· During the daytime, they receive an excessive amount of sunshine, and their rate of transpiration tends to rise.
·
Transpiration is the
loss of water in the form of vapors from the plant parts through stomata.
· If the rate of transpiration increases, the cactus plant will dry out quickly.
· To avoid this, they have changed their system in which they open at night and take in carbon dioxide from the atmosphere, and the gaseous exchange occurs before the sunlight.
· During the daytime,
they close their stomata to reduce transpiration.
· Such adaptability has enabled them to live in harsh environments.
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