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The concentration of CO2 is lower inside a plant cell than in the atmosphere (outside the...

The concentration of CO2 is lower inside a plant cell than in the atmosphere (outside the cell). In your own words, describe how the CO2 levels are kept low inside the plant cell and explain why this is necessary. Assume the outer surface of the leaves of this plant have a waxy layer.

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Expert Solution

1.An increase in concentration of carbondioxide upto 1% increase the rate of photosynthesis but at higher concentration it is toxic to plant and also causes closing of stomata and reduce the transpiration.

2. During photosynthesis the concentration of carbondioxide decreases by the combination of corbon dioxide with RubP to form 3-PGA in the presence of rubisco enzyme.This process is called Carboxylation that causes absorption of carbon dioxide.

3.As increase in concentration of carbondioxide causes closing of stomata that's why carbon dioxide combine with the PEP to form oxaloacetate (OAA) that further change into malic acid.This malic acid release H+ ions and combine with K+ (potassium ion) to form K- malate. This causes increase in concentration of guard cell and absorption of water which makes it turgid or opening of stomata.

In the above process the concentration of carbondioxide decreases due to further changes into another form.

gladiator answered 1 year ago
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