End-of-Year Science Test

Which two statements about microorganisms are not correct? Tick two boxes.

• They are usually single-celled.

• They include bacteria.

• They have tissues and organs.

• They are all decomposers.

Draw one line from each cell structure to its function.

What do the arrows in the food chain represent?

Some kinds of microorganism act as decomposers. Add these microorganisms to the food chain.

Explain the ecological importance of decomposers.

Complete the sentence about species. A species is a group of organisms that can reproduce to produce (a)   offspring.

Use the key to identify the species of organism shown in the picture.

Write down one piece of information that could be a reason for classifying the cold virus as a living thing.

Write down one piece of information that suggests that the cold virus is not a living thing.

Sort these words and statements into the correct column.

feels soapy

pH 4n

turns litmus blue

turns universal indicator red

potassium hydroxide