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प्रश्न
Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years?
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उत्तर
No, it is not possible that productivity of a natural community remain constant over a certain time period.
This is because
- The natural habitat is never maintained in real.
- Abundant resources are never available, they are always in short supply or just enough.
- Environment conditions for survival and reproduction are continuously changing.
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संबंधित प्रश्न
Give three hypotheses for explaining why tropics show greatest levels of species richness.
Observe the graph and select the correct option:
On a log scale the relationship of species richness and area becomes linear (straight line) and is given by the equation.
In the equation: log S = log C + Z log A , S= species richness; Z = slope of line (regression coefficient); A = area; C = Y intercept. For smaller area, the value of Z ranges from ____________.
With reference to graph select the correct alternative
The graph of species richness and area for a number of taxa like angiospermic plants, freshwater fishes, and birds is found to be ______.
Amongst the animal group given below, which one has the highest percentage of endangered species?
Which of these is true about tropical environments?
Which of these is true about tropical environments?
"Species richness increased with increased explored area but only a limit". This statement was given by.
Which one of the following is not a major characteristic feature of biodiversity hot spots?
A species-area curve is drawn by plotting the number of species against the area. How is it that when a very large area is considered the slope is steeper than that for smaller areas?
Species diversity decreases as we move away from the equator towards the poles. What could be the possible reasons?
The relation between species richness and area for a wide variety of taxa turns out to be a rectangular hyperbola. Give a brief explanation.
Lesser variation in biomass production over a period of time is called ______.
Distribution of diversity on earth shows that biodiversity from higher latitudes to lower latitudes ______.
When pre-reproductive and post - reproductive age group is same in structure, the population is______.
