Biology Past Questions and Answers

The center which controls respiratory activities the mammalian brain is the

A student trying to find out the order in which organisms appear on a cleared plot is studying one of the following

An organism X lives entirely on the waste products in another organism Y. In this association X is a

The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that

if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be