IGCSE Biology (0610) — May–June 2024, Paper 52
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A student investigated the diffusion of hydrochloric acid (HCl) into agar jelly containing bromothymol blue indicator. The agar turns yellow where acid diffuses into it. Step 1:…
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Fig. 2.1 shows a photograph of a seedling (plant P). Draw a large diagram of the seedling shown in Fig. 2.1.
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