Waec Biology 2001 Past Questions and Answers

Question 61:

• WAEC 2001

(i) Draw and label the human sperm cell.
(ii) State where the sperm cell is produced and where it is stored.
(b) Explain how the structure of the sperm cell enables it to function
(c) Mention four advantages of sexual reproduction.

Question 62:

• WAEC 2001

(a)(i) Draw and label.the mammalian heart.
(ii) Explain briefly pulmonary circulation in mammals.
(b) State five processes by which the mammalian body reduces its temperature.

Question 63:

• WAEC 2001

(a) State eight human activities that may pollute water bodies
(b) Explain the measures that may be used to prevent pollution of water bodies.
(c) Mention four methods of purifying water.

Question 64:

• WAEC 2001

(a)(i) Define tropic and nastic movements.
(ii) List four differences between tropic and nastic movements.
(b) Describe an experiment to show that auxins are produced in the apical cells of a shoot.
(c)(i) Name two plant hormones, other than auxins.
(ii) Give two examples of tropism.