Biology Past Questions and Answers

The possession of scales, laying of eggs with shells and bony structure of the head are characteristics shared by

The lungs of the lung fish is an adaptation for respiration _______?

The key event in the transition of the amphibians from water to land is the ________

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 graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.
Which of the statements below is valid?