Page 21 - ACE YR IGCSE A TOP APPROACH TO BIO

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9 Fig. 9.1 shows a plant seedling.

Fig. 9.1

(a) Make a large drawing of the plant seedling in the space provided.

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[4]
(b) Spiders are classified in the group of arachnids.

P

Q
× 2.5
Fig. 9.2

According to the following steps, find the actual length of the leg that is labelled PQ in
Fig. 9.2.

First, measure the length of the line PQ in Fig. 9.2.
Length of PQ: mm [1]

Then, calculate the actual length of the leg that is labelled PQ, by taking into account the
magnification of the microscope. Show your working in the empty space provided.

Actual length = mm [3]
[Total: 8]

Chapter 2 Organisation of the Organism 19

Chapter 2.indd 19 30/03/2022 3:08 PM