Jamb Biology 1999 Past Questions and Answers

Question 31:

• JAMB 1999

Th chitin in the exoskeleton of many arthropods is strengthened by

A. Calcium compounds
B. Organic salts
C. Lipids
D. Proteins

Question 32:

• JAMB 1999

The structure labelled II articulates with III to form

A. Sliding joint
B. Hinge joint
C. Pivot joint
D. Ball-and-socket joint

Question 33:

• JAMB 1999

Which of the bones is the radius?

A. I
B. II
C. III
D. IV

Question 34:

• JAMB 1999

The construction of dams may lead to an increase in the prevalence of

A. Typhoid fever, measles and yellow fever
B. Tuberculosis, leprosy and trypanosomiasis
C. Guinea worm, malaria and tuberculosis
D. Malaria, bilharziasis and onchocerciasis

Question 35:

• JAMB 1999

Floating microscopic heterotrophs are mostly grouped as

A. Phytoplankton
B. Zooplankton
C. Microbes
D. Nekton