Cuscuta is an example of
[2012M]
Which one of the following statements is correct for secondary succession ?
[2011]
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Large woody vines are more commonly found in :
[2011]
In the case of peppered moth (Biston betularia) the black - coloured form became dominant over the light- coloured form in England during industrial revolution.
[2009]
What is true about the isolated small tribal populations?
[2008]
A high density of elephant population in an area can result in
[2007]
Two plants can be conclusively said to belong to the same species if they
[2007]
The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
[2007]
Geometric representation of age structure is a characteristic of
[2007]
Praying mantis is a good example of
[2006]
The formula for exponential population growth is
[2006]
Niche overlap indicates
[2006]
Certain characteristic demographic features of developing countries are
[2004]
The maximum growth rate occurs in
[2004]
In which one of the following habitats does the diurnal temperature of soil surface vary most?
[2004]
What is a keystone species ?
[2004]
Diffuse porous woods are characteristic of plants growing in
[2003]
The semilog of per minute growing bacteria is plotted against time. What will be the shape of graph?
[2002]
Choose the correct sequence of stages of growth curve for bacteria
[2002]
In a population unrestricted reproductive capacity is called as
[2002]
Which part of the world has a high density of organisms? [1999]
Which of the following communities is more vulnerable to invasion by outside animals and plants ? [1998]
Two opposite forces operate in the growth and development of every population. One of them relates to the ability to reproduce at a given rate. The force opposing to it is called
[1998]
An interesting modification of flower shape for insect pollination occurs in some orchids in which a male insect mistakes the pattern on the orchid flower for the female species and tries to copulate with it, thereby pollinating the flower. This phenomenon is called:
Two opposite forces operate in the growth and development of every population. One of them relates to the ability to reproduce at a given rate. The force opposing it is called
122 videos|311 docs|196 tests
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122 videos|311 docs|196 tests
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