1. Which of the following is not a behavioural adaptation used by social animals? 59

2. A bacterial cell differs from eukaryotic cell by having no 4

3. The function of the amniotic fluid in humans is to 26

4. Which of the following constitutes the cellular components of the mammalian blood? I. Haemoglobin II. Erythrocytes III. Leucocytes IV. Platelets 14

5. Which of the following organisms exhibits extracellular digestion? 31