Jamb Biology 2000 Past Questions and Answers

Question 46:

• JAMB 2000

The mutation theory of organic evolution was propounded by

A. Gregor Mendel
B. Hugo de Vries
C. Jean Lamarck
D. Charles Darwin

Question 47:

• JAMB 2000

A certain savanna grasshopper changes colour from green during the rainy season to brown during the dry season and black after dry season bush fires. The reason for these colour changes is that the

A. Grasshopper is getting older
B. Environmental temperature is changing
C. Grasshopper is avoiding predation
D. Grasshopper is frequently moulting

Question 48:

• JAMB 2000

Complex social behaviour and organization are found mostly in

A. Insects
B. Birds
C. Reptiles
D. Mammals