A plant is provided with ideal conditions for photosynthesis and supplied with isotope $14 C O_{2}$ . When the products of the process are analysed carefully, what would be the nature of products?

Glucose and oxygen are labelled.

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Oxygen is labelled, but glucose is normal.

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Glucose and oxygen are normal.

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Glucose is labelled, but oxygen is normal.

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Solution

The correct option is C Glucose is labelled, but oxygen is normal.
In the process of photosynthesis, plants manufacture glucose from $H_{2} O$ and $C O_{2}$ and oxygen gas is released.
$6 C O_{2} + 12 H_{2} O h v - \to C h l C_{6} H_{12} O_{6} (G l u c o s e) + 6 H_{2} O + 6 O_{2} ↑$
So, due to isotopic carbon of $C O_{2}$ , only glucose will be labelled, but oxygen will be normal.

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A plant is provided with ideal conditions for photosynthesis and supplied with isotope 14CO2. When the products of the process are analysed carefully, what would be the nature of products?

A plant is provided with ideal conditions for photosynthesis and supplied with isotope $14 C O_{2}$ . When the products of the process are analysed carefully, what would be the nature of products?