Waec Biology 2009 Past Questions and Answers

Question 21:

• WAEC 2009

The reason why hospitals use saline solutions as drip instead of water is

A. Because salt is a preservative
B. To prevent contamination of the body
C. To maintain the composition of the body fluids
D. To increase the number of blood cells

Question 22:

• WAEC 2009

The part of the ear which contains nerve cells sensitive to sound vibrations is the

A. Cochlea
B. Ampulla
C. Tympanum
D. Malleus

Question 23:

• WAEC 2009

Spectacles with convex lenses correct long-sightedness by

A. Converging the light rays before they enter the eye.
B. Diverging the light rays before they enter the eye.
C. Reducing light intensity before it enters the eye
D. Increasing light intensity before it enters the eye

Question 24:

• WAEC 2009

A seed of a flowering plant can best be described as

A. Radicle and plumule
B. The developed ovule
C. The embryo and endosperm
D. Developed ovary

Question 25:

• WAEC 2009

Which of the following processes removes carbon from the atmosphere?

A. Putrefaction
B. Photosynthesis
C. Volcanic eruption
D. Burning of fuels