Which matching is correct for respiration, combustion and photosynthesis?
Answer and explanation
Correct answer: Oxygen supports respiration and combustion, and carbon dioxide is used in photosynthesis.
The governing concept is the role of gases in biological and chemical processes. Aerobic respiration uses oxygen to release energy from food, and combustion needs oxygen to continue burning. Plants take in carbon dioxide as a raw material for photosynthesis and use light energy to make food. Hence A is correct. Nitrogen and argon are not the stated main gases, while the other options assign unsuitable roles to ozone, helium, methane or argon.
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What is the correct answer to this question?
Oxygen supports respiration and combustion, and carbon dioxide is used in photosynthesis.
Why is this the correct answer?
The governing concept is the role of gases in biological and chemical processes. Aerobic respiration uses oxygen to release energy from food, and combustion needs oxygen to continue burning. Plants take in carbon dioxide as a raw material for photosynthesis and use light energy to make food. Hence A is correct. Nitrogen and argon are not the stated main gases, while the other options assign unsuitable roles to ozone, helium, methane or argon.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting. Topic: Accounting Information.
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