ICAS Biological Sciences (Living Things)

Question 1

Which process do green plants use to make their own food from sunlight?

Accepted Answer

Photosynthesis

Answer

In photosynthesis, plants use light energy, water and carbon dioxide to make glucose (food) and release oxygen.

Question 2

Which gas do plants take in from the air to carry out photosynthesis?

Accepted Answer

Carbon dioxide

Answer

Plants take in carbon dioxide through their leaves and use it to make sugar. They release oxygen as a by-product.

Question 3

In the food chain grass → rabbit → fox, what is the rabbit?

Accepted Answer

A primary consumer

Answer

The rabbit eats the producer (grass), which makes it a primary consumer. The fox, which eats the rabbit, is a secondary consumer.

Question 4

Which organ pumps blood around the human body?

Accepted Answer

Heart

Answer

The heart is a muscular pump that pushes blood through the blood vessels to every part of the body.

Question 5

Which of these animals is a mammal?

Accepted Answer

Dolphin

Answer

Dolphins breathe air with lungs, are warm-blooded and feed their young milk, which makes them mammals. Sharks are fish, penguins are birds and crocodiles are reptiles.

(ICAS) ICAS Practice Test

(ICAS) ICAS Practice Test

ICAS Biological Sciences (Living Things)