Three species of tree have the following binomials: Carpodiptera africana, Commiphora africans, Commiphora angolensis.

Which two of these species do biologists consider to be the most closely related? Explain your answer.

The photograph shows a section through a fruit.

Draw a large diagram of the fruit.

The photograph shows a section through a fruit. Answer the following question.

Calculate the diameter of the actual fruit and mention the unit.

The diagram below shows a virus.

With reference to the diagram, discuss whether viruses can be considered to be living organisms.

The diagram below shows a virus.

Measure the length of the scale bar. Use this, and the label on the scale bar, to calculate the magnification of the diagram.