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प्रश्न
Amongst the animal groups given below, which one appears to be more vulnerable to extinction?
विकल्प
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
Explain, giving three reasons, why tropics show greatest levels of species diversity.
What is the significance of the slope of regression in a species-area relationship?
Observe the graph and select the correct option:
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 ______.
On a log scale the relationship of species richness and area becomes linear (straight line) and is given by the equation.
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 ______.
Oxygen dissociation curve for Myoglobin has the following shape:
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?
Which of these is true about tropical environments?
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 species-area relationship is represented on a log scale as ______.
Distribution of diversity on earth shows that biodiversity from higher latitudes to lower latitudes ______.
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 ______.
Which of the following hypothesis suggests that ecosystems are like aeroplanes where flight safety (ecosystem functioning) may or may not be compromised, depending upon which species are being lost?
Alexander von Humboldt observed that, within a region species richness ______ with increasing explored area.
Match the scientist in column I with their contribution in column II and choose the correct option.
| Column I | Column II | ||
| i. | Alexander Van Humboldt | a. | Estimated 7 million species round the globe |
| ii. | Robert May | b. | Rivet popper hypothesis |
| iii. | David Tillman | c. | Species Area Relationship |
| iv. | Paul Ehrlich | d. | Productivity stability hypothesis |
