Waec Biology 1995 Past Questions and Answers

Question 61:

• WAEC 1995

Ultra-filtration process at the Bowman’s capsule is facilitated by

A. The volume of water in the blood
B. The high concentration of urea in the blood of the Bowman’s capsule
C. The differential blood pressure between the glomerulus and the Bowman’s capsule
D. The differential blood volume between the glomerulus and the Bowman’s capsule
E. Heavy weight of the urea, water, glucose and amino acids in the Bowman’s capsule.

Question 62:

• WAEC 1995

(a) Make a labelled diagram of the vertical section of the mammalian tooth.
(b) Describe the role of the following in mammalian nutrition: (i) teeth; (ii) tongue ; (iii) saliva; (iv) stomach .
(c) Describe how to test for protein in a food sample

Question 63:

• WAEC 1995

(a) With reference to the food chain, explain the role of the followings;
(i) green plants;
(ii) herbivores;
(iii) carnivores;
(iv) decomposers

(b) With the aid of diagram, describe the carbon cycle.

Question 64:

• WAEC 1995

(a) What is a cell?
(b) Describe briefly the structure of DNA.
(c) Describe the process of mitosis
(d) What is the importance of mitosis to living organisms?