Question

HOW DO THE DESERT PLANT TAKE UP THE CARBON DIOXIDE
EXPLAIN
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Answer 1

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Desert Plants

In desert plants, the stomata is open during night. During night, desert plants absorb carbon dioxide and form an intermediate.

In desert plants, the stomata is open during night. During night, desert plants absorb carbon dioxide and form an intermediate.Then during day time when the stomata is closed to prevent loss of water, they use this stored carbon dioxide to perform photosynthesis.

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Answer 2

Answer:

Heya.......... ✨

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Here's ur answer :

»» Crassulacean Acid Metabolism :

»» In certain plants, (members of Crassulaceae) like succulents and plants which grow in dry conditions, (xerophytes) stomata remain closed during day to check the loss of water due to transpiration. Mechanism of photosynthesis in these plants is different and it is called Crassulacean acid metabolism. Such plants are called CAM plants.

Example : Kalanchoe.

In these plants CO2 (Carbon dioxide) is taken up during night, when stomata are open by PEPA and Oxaloacetic acid is formed in the presence of enzyme PEP carboxylase. Oxalo-acetic acid then gets reduced to Malic acid in the presence of enzyme malate dehydrogenase. Malate gets accumulated during night.

During day, when stomata are closed, malate undergoes decarboxylation gradually and gets converted into pyruvate. CO2 thus released enters Calvin cycle and sugar is produced, which subsequently gets converted into starch. Pyruvate also gets converted into starch. Thus, starch gets accumulated during day.

During night, from starch, PEPA is regenerated.

Thus, in CAM plants, C-4 pathway occurs during night and C-3 pathway during day.

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