1992 - JAMB Biology Past Questions and Answers - page 2

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

Fungi are heterotropic because they

The major site of photosynthesis in the leaf is the

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

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

Gaseous exchange in Aves occurs in the

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

The excretory organ in insects is the

The structure labelled 5 is the

Melanin and keratin are produced in the part labelled