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प्रश्न
Species diversity decreases as we move away from the equator towards the poles. What could be the possible reasons?
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उत्तर
In general, species diversity decreases as we move away from the equator toward the poles.
The possible reason could be as follows:
- Temperature decreases as we move away from the equator towards the poles.
- The intensity of sunlight decreases as we move away from the equator towards the poles and hence productivity.
- In polar regions, the temperature is very low so most of the organisms cannot survive in that habitat.
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संबंधित प्रश्न
Give three hypotheses for explaining why tropics show greatest levels of species richness.
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Maximum species richness is observed in the ______.
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 ____________.
All are true regarding graph showing species richness - area relationship, EXCEPT ______.
Which of the following is an observation of Alexander von Humboldt's documented pattern in ecology?
Species richness - area relationship is given by ______.
Amongst the animal group given below, which one has the highest percentage of endangered species?
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?
Is it true that there is more solar energy available in the tropics? Explain briefly.
Given below is an equation describing the Species-Area relationship between species richness and area for a wide variety of taxa as angiosperm plants, birds, bats etc. S = CAz
- Give a graphical representation of the given equation showing Species-Area relationship.
- What does 'S' represent in the given equation?
- What is the value of 'Z' (regression coefficient) for frugivorous birds and mammals in the tropical forests of different continents?
The relation between species richness and area for a wide variety of taxa appears as ______.
Who observed that within a region, species richness increased with increasing explored area, to a certain limit?
