Related InterviewSolutions

• (a) List two bacteria which bring about nitrification. (b) List one denitrifying bacteria. (c) List any two bacteria which play a role in biological nitrogen fixation.
• When we breathe in air, nitrogen also goes inside along with oxygen. What is the fate of this nitrogen?A. it moves along with oxygen into the cellsB. It comes out with the `CO_(2)` during exhalationC. It is absorbed only by the nasal cellsD. Nitrogen concentration is already more in the cells so it not at all absorbed.
• Rainfall patterns depend onA. the underground water tableB. the number of water bodies in an areaC. the density pattern of human popultion in an areaD. the prevailing season in an area
• The process of nitrogen-fixation by bacteria does not take place in the presence ofA. molecular form of hydrogenB. elemental form of oxygenC. waterD. elemental form nitrogen
• How is our atmosphere different from the atmospheres on Venus and Mars?
• The two forms of oxygen found in the atmosphere areA. water and ozoneB. water and oxygenC. ozone and oxygenD. water and carbon dioxide
• How is our atmosphere different from the atmospheres on Venus and Mars ?
• The atmosphere of the earth is heated by resiations which are mainlyA. radiated by the sumB. re-radiated by landC. re-radiated by waterD. re-radiated by land and water
• An increase in carbondioxide content in the atmosphere would not causeA. more heat to be retained by the environmentB. increase in photosynthesis in plantsC. Global warmingD. abundance of desert plants
• What is paedogenesis?