Advertisements
Advertisements
प्रश्न
Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Extent of global diversity of invertebrates is shown in the pie diagram below. Choose the most appropriate alternative that the four portions (a-d) represent.
Which of the following hypothesis states: Rich species diversity leads to lesser variation in biomass production over a period of time.
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 ____________.
Which of the following is an observation of Alexander von Humboldt's documented pattern in ecology?
Oxygen dissociation curve for Myoglobin has the following shape:
Which of these is true about tropical environments?
Amongst the animal groups given below, which one appears to be more vulnerable to extinction?
What does the term ‘Frugivorous’ mean?
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?
There is greater biodiversity in tropical /subtropical regions than in temperate region. Explain.
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.
Study the graph given below:
As per Alexander von Humboldt, what do the symbols S, A, Z and C in the graph stand for, in respect of a species and area relationship?
Distribution of diversity on earth shows that biodiversity from higher latitudes to lower latitudes ______.
The relation between species richness and area for a wide variety of taxa appears as ______.
Alexander von Humboldt observed that, within a region species richness ______ with increasing explored area.
When pre-reproductive and post - reproductive age group is same in structure, the population is______.
Tropical regions show greatest level of species richness because -
- Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.
- Tropical environments are more seasonal.
- More solar energy is available in tropics.
- Constant environments promote niche specialization.
- Tropical environments are constant and predictable.
Choose the correct answer form the options given below:
What does the variable S represent in the species-area formula log S = log C + Z log A?
