Waec Biology Past Questions and Answers

Question 716:

• WAEC 2001

Which part of the gill of fish is involved in gaseous exchange?

A. Gill slits
B. Gill bars
C. Gill covers
D. Gill filaments

Question 717:

• WAEC 2001

Which of the following is not a product of fermentation of glucose?

A. Energy
B. Alcohol
C. Lactic acid
D. Carbon dioxide

Question 718:

• WAEC 2001

Which of the following pairs of structures does not perform similar functions?

A. Lungs and spiracles
B. Root hair and mammalian hair
C. Feathers and scales
D. Contractile vacuole and kidney

Question 719:

• WAEC 2001

The effect of the contraction of the muscles of the diaphram is that

A. He volume of the thoracic cavity increases.
B. More carbon dioxide is expelled through the nostrils
C. The rib cage is drawn inwards
D. The intercostal muscle becomes relaxed

Question 720:

• WAEC 2001

Which of the following is an excretory product of Amoeba?

A. Urea
B. Ammonia
C. Uric acid
D. Amino acid