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प्रश्न
Which one of the following is not a major characteristic feature of biodiversity hot spots?
पर्याय
Large number of species
Abundance of endemic species
Mostly located in the tropics
Mostly located in the polar regions
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उत्तर
Mostly located in the polar regions
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संबंधित प्रश्न
The following graph shows the species-area relationship. Answer the following questions as directed.
(a) Name the naturalist who studied the kind of relationship shown in the graph. Write the observations made by him.
(b) Write the situations as discovered by the ecologists when the value of ‘Z’
(Slope of the line) lies between:
- 0.1 and 0.2
- 0.6 and 1.2
What does ‘Z’ stand for?
(c) When would the slope of the line ‘b’ become steeper?
Explain, giving three reasons, why tropics show greatest levels of species diversity.
Give three hypotheses for explaining why tropics show greatest levels of species richness.
What is the significance of the slope of regression in a species-area relationship?
Short answer type question
Tropical regions exhibit species richness as compared to polar regions. Justify.
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.
On a log scale the relationship of species richness and area becomes linear (straight line) and is given by the equation.
Species richness - area relationship is given by ______.
Oxygen dissociation curve for Myoglobin has the following shape:
Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years?
The relation between species richness and area for a wide variety of taxa turns out to be a rectangular hyperbola. Give a brief explanation.
Write the inference drawn by Alexander von Humboldt after his extensive explorations of South American jungle.
The species-area relationship is represented on a log scale as ______.
For frugivorous (fruit-eating) birds and mammals in the tropical forests of different continents, the slope of the species-area relationship is found to be approximately ______.
Who observed that within a region, species richness increased with increasing explored area, to a certain limit?
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:
