(a(i))[3]
Use the key to name each arthropod. Fill in the key by writing one genus name in each of the four boxes.
(a(ii))[1]
Describe a difference in one other feature, not used in the key, that can distinguish Araneus from Lithobius. Araneus [BLANK] Lithobius [BLANK]
(b(i))[5]
Draw a large version of the immature arthropod as shown in the photograph in the space below.
(b(ii))[1]
Draw a straight line linking A and B on the photograph in Fig. 2.3. This gives the length of the arthropod body as it appears in the photograph. Measure and note this length.
(b(iii))[1]
The body length of the actual arthropod is $16\text{ mm}$. Use this to calculate the magnification of the photograph to 1 decimal place.