Biology WAEC

Which of the following characters is not an example of discontinuous variation?

A. Skin colour B. Fingerprint C. Ability to roll tongue D. Sex type Correct Answer: Option A A. Skin colour

4 years ago

Which of the following human traits in a class of school children may give an approximate normal distribution curve when the variation is plotted?

A. Blood groups B. Ear shapes C. Sex distribution D. Heights Correct Answer: Option D D. Heights

4 years ago

Which of the following substances is not recycled in an ecosystem?

A. Carbon B. Energy C. Water D. Nitrogen Correct Answer: Option B B. Energy

4 years ago

Conservation may be promote by?

A. encouraging tree planting B. systematic deforestation C. overgrazing of pastures D. unabated bush timing Correct Answer: Option A A.…

4 years ago

To avoid over fishing in a lake, the following measures may be helpful except?

A. limiting fishing periods B. regulating the size of nets C. fishing throughout the year D. fish breeding exercise Correct…

4 years ago

Which of the following statements about phenylthiocarbamide (PTC) is not correct?

A. Some people BHG the taste of PTC to be bitter B. Others find this substance to be tasteless C.…

4 years ago

Many diseases caused by bacteria can be treated and cured by using?

A. antiseptics B. antibiotics C. antigens D. antibodies Correct Answer: Option B B. antibiotics

4 years ago

Which of the following activities constitutes biological control?

A. A small bony fish transported on the back of a shark B. Adding manure to crops in a garden…

4 years ago

A vaccine is introduced into a personā€˜s body to?

A. destroy all disease-causing organisms in the body B. stimulate the body to produce antibodies C. enhance the production of…

4 years ago

The following observations concerning succession are true except that the?

A. pioneer community has fewer species B. middle stages communities are most diverse C. max community has the greatest number…

4 years ago