Jamb Biology 1983 Past Questions and Answers

Question 41:

• JAMB 1983

When spirogyra cell is immersed in a salt solution more concentrated than its cell sap, it

A. Remains unchanged
B. Takes up water an burst
C. Absorbs a little water
D. Loses water and shrivels
E. Becomes turgid

Question 42:

• JAMB 1983

Urea is produced in the

A. Liver
B. Bladder
C. Spleen
D. Kidneys
E. Gall bladder

Question 43:

• JAMB 1983

What is the genetic ratio of the F₂ generation if members of F generation are allowed to self-pollinate?

A. 1 tall : 3 short
B. 3 tall : 1 short
C. 1 tall : 1 short
D. 4 short : 0 tall
E. 4 tall : 0 short

Question 44:

• JAMB 1983

The path taken by glucose from the ileum to the heart is

A. Ileum →hepatic portal vein →hepatic artery → vena cava → heart
B. Ileum → hepatic portal artery →hepatic artery → vena cava → heart
C. Ileum → hepatic portal vein → vena cava → heart
D. Ileum → hepatic vein → vena cava → heart
E. Ileum → hepatic portal vein → hepatic vein → vena cava → heart

Question 45:

• JAMB 1983

Which of the following features can be used to identify the figure above

A. Position of 7
B. Its circular nature
C. Number of 5
D. Presence of 3
E. Width of 2