Biological Keys

What are biological keys used for?

• To identify what the weather will be like

• To measure length

• To identify different types of organisms

• To measure soil moisture

Use the key to work out the species shown in the picture. The green arrows mean YES and the red arrows mean NO.

Use the key to work out the species shown in the picture. The green arrows mean YES and the red arrows mean NO.

Use the key to work out the species shown in the picture. The green arrows mean YES and the red arrows mean NO.

Use the key to work out the species shown in the picture. The green arrows mean YES and the red arrows mean NO.

Use the key to work out the species shown in the picture. The green arrows mean YES and the red arrows mean NO.

Which of the following are types of biological keys?

• Paired statement key

• Long key

• Flowing key

• Branching key