Jamb Biology 2009 Past Questions and Answers

Question 36:

• JAMB 2009

The specialized pigment cells that are involved in colouration and colour change in animals

A. Xanthophyl
B. Chromatophores
C. Chromatophyll
D. Melanin

Question 37:

• JAMB 2009

During the dry season in the tropics, the body metabolism of some animals slows to a minimal level in a process referred to as

A. Hibernation
B. Aestivation
C. Dormancy
D. Senescense

Question 38:

• JAMB 2009

According to Darwin, the driving force behind evolutionary change is

A. Natural selection
B. Genetic drift
C. Mutation
D. Gene flow

Question 39:

• JAMB 2009

Use the diagram above to answer this question.
The structure that controls loss of water vapour during transpiration is labelled

A. L
B. Ll
C. Lll
D. LV

Question 40:

• JAMB 2009

Use the diagram above to answer this question.
The part labelled l is the

A. Spongy mesophyll
B. Upper epidemis
C. Cuticle
D. Vein