What is the correct difference in direction of energy between photosynthesis and respiration?
Answer and explanation
Correct answer: Photosynthesis absorbs light energy and stores it as chemical energy, whereas respiration releases energy
In photosynthesis, plants use light energy to make glucose from carbon dioxide and water. The energy is therefore stored in the chemical bonds of glucose. During cellular respiration, glucose is oxidised and energy is released as ATP and heat. Hence, option A is correct. Option C is a close distractor but is incorrect because respiration does not require an external energy input such as light; it uses the energy stored in glucose. Exam tip: Remember photosynthesis as energy storage and respiration as energy release.
Frequently asked questions
What is the correct answer to this question?
Photosynthesis absorbs light energy and stores it as chemical energy, whereas respiration releases energy
Why is this the correct answer?
In photosynthesis, plants use light energy to make glucose from carbon dioxide and water. The energy is therefore stored in the chemical bonds of glucose. During cellular respiration, glucose is oxidised and energy is released as ATP and heat. Hence, option A is correct. Option C is a close distractor but is incorrect because respiration does not require an external energy input such as light; it uses the energy stored in glucose. Exam tip: Remember photosynthesis as energy storage and respiration as energy release.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
