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5038 w10 qp 1.pdf


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2
For
Examiner’s
Use

Section A
Answer all the questions.

1

Fig. 1.1 shows part of the carbon cycle.

carbon dioxide in
the atmosphere

animals, plants and microorganisms
produce carbon dioxide
plants use
carbon dioxide
to make sugar
animals eat
other animals

animals
eat plants

animal and plant remains
are decomposed by microorganisms
Fig. 1.1

(a) (i)

Name the process by which plants use carbon dioxide to make sugar.
................................................................................

(ii)

[1]

State two requirements for this process to occur.
1 ...............................................................................................................................
2 ......................................................................................................................... [2]

(iii)

Name the process by which animals, plants and microorganisms produce carbon
dioxide.
............................................................................................................................ [1]

© UCLES 2010

5038/01/O/N/10