Which one of the following equations suggests that $O_{2}$ released during photosynthesis comes from water?

6 C O_{2}^{18} + 12 H_{2} O \to 6 O_{2}^{18} + C_{6} H_{12} O_{6} + 6 H_{2} O^{18}

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6 C O_{2} + 12 H_{2} O^{18} \to 6 O_{2} + C_{6} H_{12} O_{6} + 6 H_{2} O^{18}

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6 C O_{2}^{18} + 12 H_{2} O \to 6 O_{2}^{18} + C_{6} H_{12} O_{6} + 6 H_{2} O

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6 C O_{2} + 12 H_{2} O^{18} \to 6 O_{2}^{18} + C_{6} H_{12} O_{6} + 6 H_{2} O

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Solution

The correct option is D $6 C O_{2} + 12 H_{2} O^{18} \to 6 O_{2}^{18} + C_{6} H_{12} O_{6} + 6 H_{2} O$
Ruben and Kamen (1941), while working on chlorella (unicellular green alga ) found that oxygen liberated during photosynthesis comes from water.
(i) When normal $H_{2} O$ radioactive $C O_{2}$ (i.e. $C O_{2}^{18}$ ) were used, normal $O_{2}$ is evolved.

$n C O_{2}^{18} + n H_{2} O L i g h t - ------ \to C h l o r o p h y l l (C H_{2} O^{18})_{n} + n O_{2} ↑ (n o r m a l) + H_{2} O$

(ii) When normal $C O_{2}$ radioactive $H_{2} O$ (i.e. $H_{2} O^{18}$ ) were used, radioactive $O_{2}$ (i.e. $O_{2}^{18}$ ) is evolved.

$n C O_{2} + n H_{2} O^{18} \to (C H_{2} O)_{n} + O_{2}^{18} ↑ (r a d i o a c t i v e o x y g e n) + H_{2} O$
So the correct option is 'D'.

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Similar questions

Photosynthesis of a carbohydrate in plants is given by chemical equation:

6 C O_{2} + 6 H_{2} O ⟶ C_{6} H_{12} O_{6} + 6 O_{2}

If you have net result as:

6 C O_{2} + 6 H_{2} O ⟶ C_{6} H_{12} O_{6} + 6 O_{2}

Check whether this reaction is correct or not.

Question 27
Which of the following equations is the summary of photosynthesis?

(a) $6 CO_2 + 12 H_2 O \rightarrow C_6H_{12}O_6+6O_2 + 6H_2O$
(b) $6CO_2+H_2O+Sunlight \rightarrow C_6 H_{12}O_6+O_2+6H_2O$
(c) $6CO_2+12H_2O+Chlorophyll+Sunlight \rightarrow C_6H_{12}O_6 + 6O_2 + 6H_2O$
(d) $6CO_2 + 12H_2O + Chlorophyll+Sunlight \rightarrow C_6 H_{12}O_6 + 6CO_2+6H_2O$

Complete the following biochemical equation of respiration.

$C_{6} H_{12} O_{6} + 6 O_{2} \to$

C_{6} H_{12} O_{6}

6 O_{2}

→

6 C O_{2}

6 H_{2} O

+ ATP

The given equation indicates which of the following activities in plants?

Q. What is not a mole ratio of

6 C O_{2} + 6 H_{2} O \to C_{6} H_{12} O_{6} + 6 O_{2}

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Which one of the following equations suggests that O2 released during photosynthesis comes from water?

Which one of the following equations suggests that $O_{2}$ released during photosynthesis comes from water?