IMO Practice Test — Food Chains & Habitats
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
hard
If hunters remove all the tigers from a forest, deer may become so many that they…
Turn into tigers
Disappear at once
Eat up all the plants
Stop eating
Explanation: Without predators, prey grow too many and over-eat plants.
Question 2 of 6
medium
A fish moved from a river to a desert would die because the desert lacks…
Sunlight
Sand
Water it needs to breathe and live
Wind
Explanation: A fish needs water; a desert cannot give it that habitat.
Question 3 of 6
medium
In 'plant to rabbit to fox', what would happen to foxes if all rabbits vanished?
Nothing changes
Foxes grow bigger
Foxes become plants
Foxes lose a food source and struggle
Explanation: Removing the rabbits cuts the foxes' food supply.
Question 4 of 6
hard
Bees help nature by carrying pollen between flowers. If bees vanished, many plants would make fewer…
Fruits and seeds
Rocks
Clouds
Rivers
Explanation: Bees pollinate flowers, helping fruits and seeds form.
Question 5 of 6
hard
A rabbit has eyes on the sides of its head. This helps it to…
Sleep
Run faster
Eat grass
See predators coming from many directions
Explanation: Side eyes give prey a wide view to spot danger.
Question 6 of 6
medium
A mushroom cannot make its own food. So it is a…
Rock
Producer
Sun
Consumer
Explanation: A mushroom takes food from other things — a consumer.