Biology Past Questions and Answers

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 cm<sup style='font-size: smaller;'>3</sup> dilute sodium hydroxide solution and 5 cm<sup style='font-size: smaller;'>3</sup> 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