Waec Biology Past Questions and Answers

Question 206:

• WAEC 1992

The conditions that ensure successful exchange of gases in multicellular organisms include the following except

A. Concentration gradient across the respiratory surface
B. Presence of thin membrane as the respiratory surface
C. Last transportation of absorbed gases
D. Presence of large surface area of the respiratory organ
E. Presence of small, dry surface area of the respiratory organ

Question 207:

• WAEC 1992

The conditions that ensure successful exchange of gases in multicellular organisms include the following except

A. Concentration gradient across the respiratory surface
B. Presence of thin membrane as the respiratory surface
C. Last transportation of absorbed gases
D. Presence of larg surface area of the respiratory organ
E. Presence of small, dry surface area of the respiratory organ

Question 208:

• WAEC 1992

The respiratory organ found in the cockroach is the

A. Air sac
B. Trachea
C. Lung book
D. Lung
E. Gill

Question 209:

• WAEC 1992

Which of the following organs is associated with deamination of proteins?

A. Lung
B. Stomach
C. Kidney
D. Liver
E. Heart

Question 210:

• WAEC 1992

Ultrafiltration in the kidney takes place in the

A. Loop of Henle
B. Renal vein
C. Bowman's capsule
D. Pelvis
E. Pyramid