Waec Biology 2010 Past Questions and Answers

Question 11:

• WAEC 2010

Excretion in Paramecium sp. is by diffusion because

A. Its habitat is water and moist places
B. It has simple, small and few internal organs
C. It has a large surface area to volume ratio.
D. It has a large efficient meganucleus.

Question 12:

• WAEC 2010

The axial skeleton is composed of the

A. Skull and vertebral column
B. Limbs and girdles
C. Atlas and axis.
D. Radius and ulna

Question 13:

• WAEC 2010

The inorganic components of bone consist of

A. Magnesium, sodium and calcium
B. Magnesium, phosphorus and calcium
C. Sodium, phosphorus and calcium,
D. Potassium, magnesium and calcium

Question 14:

• WAEC 2010

A pulse is best described as

A. Contraction of arteries to let out blood.
B. Contraction of veins to allow blood into them
C. Dilation of arteries to accommodate blood rushing through.
D. Pumping action of the heart to move blood round the body.

Question 15:

• WAEC 2010

The following characteristics are associated with the mammalian lungs except

A. Large surface area
B. Expandable lungs
C. Moist surface
D. Highly vascularized