Waec Biology Past Questions and Answers

Question 421:

• WAEC 1995

The following are useful measures for conserving forest except

A. Preventing and controlling accidental forest fire
B. Encouraging the use of charcoal for industrial and domestic purposes
C. Combating and preventing plant diseases
D. Reafforestation of depleted forest
E. Protection of young growing trees

Question 422:

• WAEC 1995

The following practices are aimed at soil conservation except

A. Contour ridging
B. Application of manures
C. Strip cropping
D. Bush clearing
E. Crop rotation

Question 423:

• WAEC 1995

Which of the following natural resources is most readily available to all organisms?

A. Water
B. Oil
C. Food
D. Air
E. Mineral salts

Question 424:

• WAEC 1995

Which of the following is an example of discontinuous variation?

A. Height
B. Size of head
C. Blood group
D. Skin colour
E. Length of foot

Question 425:

• WAEC 1995

Hereditary variation is best described as

A. Characters transmitted from generation to generation
B. Traits acquired from diseases
C. Characters that show up due to social conditions
D. Traits acquired from habits and environmental conditions
E. Characters that result from physical injuries.