1. (i) What biological knowledge or study is required in dealing with locusts that infest a
maize crop. (1 mark)
(ii) State the functions of the following cell structures. (2 marks)
(a) Sapvacuole.
(b) Nucleolus.
2. Which two classes of phylum arthropoda have their head fused with the thorax?(2 marks)
3. (a) Name the part of the eye in which the light sensitive cells are located. (1 mark)
(b)List the two types of sensory cells found in the part named in (a) above. (2 marks)
4. (a) Name two raw materials for the dark stage process of photosynthesis. (2 marks)
(b) The set up shows an experiment to investigate photosynthesis.
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