DEMOGRAPHY

The study of the vital statistics that affect population size is called demography. Birth rate and death rate vary among subgroups within a population. This birth rate and death rate…

Objective for Ecophysiology

Multiple Choice Questions (MCQs) Which of the followings form visible spectrum? (a) 400-750       (b) 300-600                  (c) 200- 700      (d) 400- 500 The ultraviolet radiations have wavelengths less than: (a) 300             …

WIND

Air in motion is called wind. It can circulate gases, water vapours and small soil particles. The action of wind is an ecological factor. Its affect may be direct or…

WATER

Water is a most important environmental factor. It is essential for all life processes. The living cells have about 80% water. It is essential for the maintenance of turgidity of…