Biology Past Questions

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646

5 cm³ dilute sodium hydroxide solution and 5 cm³ one percent copper sulphate solution are added to a solution of food specimen. The purple colour which is observed shows the presence of

A. glucose
B. starch
C. fat
D. protein

View Answer & Discuss (1) JAMB 1992

647

The blood vessel which carries blood from the alimentary canal to the liver is the

A. hepatic artery
B. hepatic vein
C. hepatic portal vein
D. mesenteric artery

View Answer & Discuss (3) JAMB 1992

648

Gaseous exchange in Aves occurs in the

A. tracheoles
B. bronchi
C. air sacs
D. trachea

View Answer & Discuss (4) JAMB 1992

649

In the absence of oxygen, the pyruvic acid produced during glycolysis is converted to CO₂ and

A. water
B. glycerol
C. ethanol
D. citric acid

View Answer & Discuss (6) JAMB 1992

650

The excretory organ in insects is the

A. kidney
B. malpighian tubule
C. flame cell
D. nephridium

View Answer & Discuss (3) JAMB 1992

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