Biology 1992 JAMB Past Questions

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The flow of air and water in or out of the mesophyll layer of a leaf is controlled by the

A. stomata
B. lenticels
C. air space
D. guard cell

View Answer & Discuss (19) JAMB 1992

Fungi are heterotropic because they

A. have no leaves
B. lack roots
C. are filamentous
D. lack chlorophyll

View Answer & Discuss JAMB 1992

The major site of photosynthesis in the leaf is the

A. palisade parenchyma
B. mesophyll parenchyma
C. upper epidermis
D. lower epidermis

View Answer & Discuss (12) JAMB 1992

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

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

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Biology 1992 JAMB Past Questions

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