Respiration — living things release energy from food
P5 Science · Energy Forms and Uses · 108 questions · difficulty D1–D5 · Singapore MOE-aligned
Sample questions
SAMPLE 1
What is the difference between how plants and animals obtain energy for life processes?
A Plants make their own food through photosynthesis, then use respiration to release energy; animals get food by eating, then use respiration to release energy
B Plants use photosynthesis to get energy directly; animals use respiration to get energy
C Plants do not need respiration because they make their own energy; animals need respiration
D Animals use photosynthesis to make food; plants use respiration to release energy
SAMPLE 2
Why do living things need to carry out respiration?
A To make food from sunlight
B To release energy from food for life processes
C To take in oxygen from the air
D To remove waste from the body
SAMPLE 3
A marathon runner breathes faster and sweats more during a race. Which statement best explains why the runner needs to breathe faster?
A To take in more oxygen needed for respiration to release more energy for running
B To remove carbon dioxide that is used for energy
C To help the muscles grow bigger while running
D To cool down the body by taking in cold air
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