16. 
The diagram above is an illustration of a human brain. Study it and answer this question
The part labelled I is the_________
- A. olfactory lobe
- B. cerebellum
- C. cerebrum
- D. medulla oblongata
17. The function of the part labelled II is that it controls_______
- A. posture and balance of the body
- B. all voluntary actions
- C. temperature and appetite
- D. many involuntary actions
18. To focus on a distant object, the ciliary muscle of the eye______
- A. contracts and the eye lens gets thicker
- B. relaxes and the eye lens gets thinner
- C. contracts and the eye lens gets thinner
- D. relaxes and the eye lens gets thicker
19. The main function of the amniotic fluid is for______________
- A. respiration in the foetus
- B. protection of the foetus from shock
- C. Lubricating the birth canal foetus
- D. nourishing the foetus
20. 
The diagram above is an illustration of the longitudinal section of a flower. Study it and answer this question
Which part of the flower is responsible for the protection of young flower buds?
21. The essential parts of the flower are labelled_______
- A. I, II and III
- B. II, III and IV
- C. III, V and VI
- D. IV, V and VI
22. Deficiency in insulin could lead to________
- A. cirrhosis
- B. hepatitis
- C. diabetes
- D. nephritis
23. Which of the following forms of energy is utilized during photosynthesis?
- A. Potential
- B. Kinetic
- C. Solar
- D. Chemical
24. Light is excluded from a water culture experiment in order to________
- A. prevent overheating of the roots
- B. enable the roots to grow straight down
- C. prevent ionization of water molecules
- D. prevent the growth of algae
25. The major mineral present in the shell of Molluscs is________
- A. Copper
- B. Sodium
- C. Iron
- D. Calcium
26. The digestion of proteins starts in the______
- A. small intestine
- B. stomach
- C. large intestine
- D. mouth
27. Tooth decay is usually caused by___________
- A. undigested and absorbed food
- B. eating a limited amount of sweetened food.
- C. the bacteria in the mouth that metabolize sugar to acids
- D. eating a lot of proteinous foods
28. The conversion of ammonium salts into nitrates is called_______
- A. putrefaction
- B. denitrification
- C. fixation
- D. nitrification
29. The salinity of a brackish habitat________
- A. increases immediately after rainfall
- B. increases at the end of the rain
- C. decreases with an increase in the number of organisms
- D. increases during the dry season
30. If 90 ants are found in a field with a total area of 100 m. what is the population density of the ants?
- A. 0.09
- B. 0.90
- C. 9.00
- D. 90.00
