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प्रश्न
Amongst the animal groups given below, which one appears to be more vulnerable to extinction?
पर्याय
Insects
Mammals
Amphibians
Reptiles
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उत्तर
Amphibians
Explanation:
About 32 percent of amphibian species are at risk due to factors like habitat loss, pollution, and environmental changes. This vulnerability is higher compared to insects, reptiles, and mammals. The decline is largely caused by habitat destruction, environmental sensitivity, and other human-induced factors, making amphibians one of the most threatened groups in biodiversity conservation efforts.
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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.
Short answer type question
Tropical regions exhibit species richness as compared to polar regions. Justify.
The 'rivet' in the rivet popper hypothesis is considered to represent the ______.
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.
Latitudinal and altitudinal gradient is shown by which of the following habitat(s)?
Maximum species richness is observed in the ______.
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 ______.
The graph of species richness and area for a number of taxa like angiospermic plants, freshwater fishes, and birds is found to be ______.
Select the correct alternative for x and y.
Which of the below mentioned regions exhibit lees seasonal variations?
Which of these is true about tropical environments?
The pattern of biodiversity is affected by ______.
"Species richness increased with increased explored area but only a limit". This statement was given by.
What does the term ‘Frugivorous’ mean?
There is greater biodiversity in tropical /subtropical regions than in temperate region. Explain.
Is it true that there is more solar energy available in the tropics? Explain briefly.
Species diversity decreases as we move away from the equator towards the poles. What could be the possible reasons?
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?
The species-area relationship is represented on a log scale as ______.
The relation between species richness and area for a wide variety of taxa appears as ______.
Rivet Popper Hypothesis is an analogy to explain the significance of ______.
Who observed that within a region, species richness increased with increasing explored area, to a certain limit?
