1. | Genetic diversity | 2. | Species diversity |
3. | Ecological diversity | 4. | Biosphere diversity |
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A | B | C | |
1. | Insects | Echinoderms | Molluscs |
2. | Insects | Molluscs | Crustaceans |
3. | Crustaceans | Insects | Molluscs |
4. | Molluscs | Crustaceans | Insects |
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Statement I: | ‘A’ group will be of fishes. |
Statement II: | ‘B’ and ‘C’ are endotherms. |
Statement III: | ‘D’ are more successful on land than ‘E’. |
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Statement I: | All members of A are heterotrophs. |
Statement II: | The primary reason for the success of B on land is the presence of the reproductive organ, flower. |
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I. | Within a region, species richness decreases with increasing explored area. |
II. | The rectangular hyperbola represents the relation between species richness and area for angiosperm plants, birds, bats and freshwater fishes, for example. |
III. | Z represents the regression coefficient or the slope of the line. |
IV. | The value of Z lies in the range of 0.1 to 0.2 regardless of the taxonomic group or the region. |
V. | For frugivorous birds and mammals in the tropical forests of different continents, the slope is found to be 1.15. |
VI. | If the species area relationship is analysed for very large areas, the slope of the line is much steeper and Z value lies in the range of 0.6 to 1.2. |
1. | 3 | 2. | 4 |
3. | 5 | 4. | 6 |
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I: | A is the emergence of discontinuities in an organism's preferred environment (habitat), causing population discontinuities and ecosystem decay. |
II: | B is the process by which a natural habitat becomes incapable of supporting its native species. |
Table I | |||
A | B | ||
C | D |
Table II | |||
P | Thylacine | Q | Dodo |
R | Quagga | S | Steller’s sea cow |
A | B | C | D | |
1. | Q | R | S | P |
2. | Q | R | P | S |
3. | P | Q | R | S |
4. | P | S | Q | R |
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Statement I: | It was always a native of India. |
Statement II: | It reproduces very slowly with the help of offset. |
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Statement I: | A is Clarias gariepinus and its introduction in Indian rivers is posing a threat to the indigenous catfishes. |
Statement II: | B is Nile perch and its introduction into Lake Victoria in East Africa led to the extinction of an ecologically unique assemblage of more than 200 species of Cichlid fish in the lake. |
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I: | It is the Amazon rainforest area. |
II: | It is called as the ‘lung’ of planet Earth. |
III: | This area is very poor in biodiversity. |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
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