IMO Practice Test — Living & Non-Living Things
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
medium
A plant cannot walk, yet it is living. Why?
It is tall
It is green
It grows, feeds and makes seeds
It has no roots
Explanation: Plants grow, make food and seeds, so they are alive.
Question 2 of 6
hard
Sort these: stone, cotton, plastic. Which was once-living?
Stone
Cotton (from a plant)
Plastic
All of them
Explanation: Cotton came from a living plant; stone and plastic never lived.
Question 3 of 6
hard
Coal and oil formed long ago from…
Once-living plants and animals
Pure rock
Sea water
Sand only
Explanation: Coal and oil come from once-living things buried long ago.
Question 4 of 6
medium
Why might a plant in a dark cupboard slowly die?
It has too much air
It is too clean
It cannot get sunlight to make food
It is too tall
Explanation: No sunlight means a plant cannot make its food.
Question 5 of 6
hard
A seed looks still, yet we call it living. Why?
It is hard
It is small
It is brown
It can grow into a new plant
Explanation: A seed holds life and can grow into a plant.
Question 6 of 6
medium
Why is a cloud non-living even though it moves?
It is cold
It is white
It is in the sky
It cannot grow, feed or reproduce
Explanation: Clouds move with wind but have no life signs.