Biology 1990 Jamb Past Questions and Answers

Question 46 :

• JAMB 1990

Free nitrogen is released to the atmosphere by

A. Nitrogen-fixing bacteria
B. Nitrifying bacteria
C. Denitrifying bacteria
D. Saprophytic bacteria

Question 47 :

• JAMB 1990

Which structure is the glomerulus?

A. 5
B. 3
C. 2
D. 1

Question 48 :

• JAMB 1990

If the blood is too concentrated, more water is absorbed from

A. 5
B. 4
C. 3
D. 1

Question 49 :

• JAMB 1990

All the cell bodies in the spinal cord are found in

A. 1
B. 2
C. 3
D. 4

Question 50 :

• JAMB 1990

In a reflex action, impulse flows from

A. 1 to 2
B. 2 to 1
C. 4 to 1
D. 4 to 2