2009 - WAEC Biology Past Questions and Answers - page 1

A group of closely related organisms capable of interbreeding to produce fertile offspring are known as members of a

Viruses are economically important because they

A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were

The cytoplasm of the cell is considered a very important component because it

After an hour, the level of water in the thistle funnel will

The experiment above is used to demonstrate the process of

In plant cells the role of the membrane is played by the

Red blood cells were found to have burst open after being placed in distilled water for an hour. This phenomenon is known as

The curvature movement of plants in response to the stimulus of water is called

Two organelles directly involved in mitotic cell division are