Waec Biology 2006 Past Questions and Answers

Question 16:

• WAEC 2006

Which of these factors does not contribute towards
the ascent of water in plants?

A. Root pressure
B. Capillarity
C. Transpiration pull
D. Turgor pressure

Question 17:

• WAEC 2006

Gaseous exchange occurs through the following structures in some organisms except

A. Spiracle and tracheae
B. Alveoli and lungs
C. Stomata and lenticels
D. Chloroplast and plastids

Question 18:

• WAEC 2006

Which of the following organs in mammals is not excretory in function?

A. Liver
B. Kidney
C. Pancreas
D. Lungs

Question 19:

• WAEC 2006

The ventricles of the mammalian heart have thicker
muscular walls than the auricles because the

A. Ventricles are larger
B. Ventricles receive more blood
C. Ventricles pump blood to longer distances
D. Auricles have smaller capacity

Question 20:

• WAEC 2006

Which of the following substances is not an excretory product in mammals?

A. Carbon dioxide
B. Water
C. Faeces
D. Urea