Plants such as Prosopis, Acacia and Capparis represent examples of tropical
[1998]
The present population of the world is about
[1997]
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What is the most important factor for the success of animal population?
[1997]
Keystone species in an ecosystem are those
[1997]
In increasing order of organizational complexity, which one of the following is the correct sequence?
[1997]
The nature of climax community ultimately depends on
[1996]
Human population growth in India
[1996]
In India, human population is heavily weighed towards the younger age groups as a result of
[1995]
The concept that population tends to increase geometrically while food supply increases arithmetically was put forward by
[1995]
Which of the following pairs is correctly matched?
[1995]
Sunken stomata is the characteristic feature of
[1995]
Tropical forests occur in India
[1994]
In a food chain, the largest population is that of
[1994]
Animals that can tolerate a narrow range of salinity are
[1994]
Xeric environment is characterised by
[1994]
Association of animals when both partners are benefitted
[1993]
Soil best suited for plant growth is
[1993]
The sum total of the populations of the same kind of organisms constitute
[1993]
Soil particles determine its
[1992]
A fertile agricultural soil appears deep coloured at the surface as compared to soil one metre down. The reason for colour of top soil is
[1992]
Which one is true?
[1991]
Deep black soil is productive due to high proportion of
[1991]
Homeostasis is
[1991]
Competition for light, nutrients and space is most severe between
[1988]
A mutually beneficial association necessary for survival of both partners is
[1988]
122 videos|311 docs|196 tests
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122 videos|311 docs|196 tests
|