Waec Biology Past Questions and Answers

Question 821:

• WAEC 2002

(a) What is a receptor?
(b) Describe the general features common to all receptors.
(c)(i) Make a labelled diagram 8cm - 10cm long, to show the outer and middle ear only of human.
(ii) List three ways of caring for the ear.

Question 822:

• WAEC 2002

(a) List the main constituents of mammalian blood.
(b) State two functions of each constituent.
(c) Tabulate six differences between arteries and veins.
(d) Name the main artery which transports blood to the:
(i) Lung
(ii) Kidney.

Question 823:

• WAEC 2002

(a) What is sexual reproduction?
(b) State five functions of the placenta and four functions of the umbilical cord of a mammal.
(c) List four types of placentation in flowering plants.
(d) State four conditions necessary for seed germination.

Question 824:

• WAEC 2002

(a)(i) Define ecological succession.
(ii) List four characteristics of ecological succession of plants.
(b) Explain four factors which affect population size
(c) State the adaptation of tapeworm (Taenia Solium) to its habitat in the gut of human.

Question 825:

• WAEC 2003

Which of the following is not correct about human cell?

A. The basic unit of living thing is the human cell
B. All living organisms are either single or group of cell(s)
C. All the cells in organism are the same
D. There is no life apart from the in cell