Waec Biology 2018 Past Questions and Answers

Question 46:

• WAEC 2018

The chemical bond that holds the bases of the two strands of DNA together is

A. Oxygen bond
B. Hydrogen bond
C. Electrovalent bond
D. Covalent bond

Question 47:

• WAEC 2018

The diagram above is an illustration of one of the theories of evolution. Who proposed the theory in the illustration?

A. Louis Pasteur
B. Gregor Mendel
C. Robert Hooke
D. Jean Lamarck

Question 48:

• WAEC 2018

The theory supports

A. Natural selection
B. Struggle for survival
C. Independent assortment
D. The use and disuse of body parts

Question 49:

• WAEC 2018

In evolution, fossils are naturally preserved in

A. Rocks
B. Water
C. Chemicals
D. Trees

Question 50:

• WAEC 2018

Which of the following is not a social insect?

A. Termite
B. Housefly
C. Honeybee
D. Ant