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?

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

Explain the ecological importance of decomposers.

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

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

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Sort these words and statements into the correct column.

feels soapy

pH 4n

turns litmus blue

turns universal indicator red

potassium hydroxide