Question 5 — Anil claims to his friend - Questions at the end of the chapter - Chapter 9 Class 7 - Life Processes in Animals (Curiosity)
Last updated at August 10, 2026 by Teachoo
Q 5
Question
Anil claims to his friend Sanvi that respiration and breathing are the same process. What question(s) can Sanvi ask him to make him understand that he is not correct?
Breathing (lungs, physical) vs Respiration (cells, chemical)
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Sanvi can ask: "Is breathing a physical or chemical process? Where does respiration happen?"
Explanation
Breathing is a
physical process
— moving air in and out of the lungs. It happens in the lungs.
Respiration is a
chemical process
— breaking down glucose using oxygen to release energy. It happens inside every cell of the body.
Sanvi can ask: "Can you hold your breath and still have respiration happening?" (Yes! Cells continue respiration briefly even when we hold our breath.)
Sanvi can ask: "Does breathing happen inside cells?" (No — breathing moves air to the lungs; respiration happens inside cells.)
Breathing = physical (air in/out, lungs). Respiration = chemical (glucose + O₂ → energy, inside cells). They are different processes.
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