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Question

(a) What is given out during respiration is used up during photosynthesis. Explain this statement.
(b) Complete the following word equation.
food(glucose) + oxygen ⟶ _______________ + ________________ + __________________


Solution

(a) During respiration, glucose is oxidised to give carbon dioxide and water along with energy.

Equation for respiration:
C6H12O6 +6O26CO2 + 6H2O+Energy

Photosynthesis is the process in which green plants synthesise their food (glucose) with the help of sunlight. In this process, carbon dioxide combines with water to form glucose.

Equation for photosynthesis:
6CO2 + 6H2O+Energy C6H12O6+6O2 

Hence, what is given out in respiration is used in photosynthesis.

(b) Food (Glucose)+OxygenCarbon dioxide+Water+Energy

Science
Active Science
Standard VII

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