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Question

(i) Fill in the blanks in the following equations of two chemical reactions:
(a) __________ + 12H2O Light energy C6H12O6 + __________ + __________
(b) __________ 6O2 Chlorophyll 6__________ + 6__________ + Energy
(ii) Name the two processes represented by the above two reactions.
(iii) State any two differences in these processes other than those already indicated in the reactions.
(iv) Which one of these two reactions is the supporter of all life on earth?

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Solution

(i) (a) 6CO2 + 12H2O ChlorophyllLight energy C6H12O6 + 6O2 + 6H2O

(b) C6H12O6 + 6O2 6CO2 + 6H2O + Energy

(Note: There is a printing mistake in the book in part (b))

(ii) Photosynthesis and respiration are represented by the above two reactions.

(iii) Photosynthesis takes place in green plants only, whereas respiration takes place in all living organisms.

(iv) Photosynthesis (reaction (a)) is the supporter of all the life on the Earth.

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