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Q. No.Frugivorous birds are found in large numbers in tropical forests mainly because of :
1.
lack of niche specialisation
2.
higher annual rainfall
3.
availability of fruits throughout the year
4.
temperature conducive for their breeding
Subtopic: Biodiversity Patterns |
71%
From NCERT
NEET - 2022
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The given picture shows the plant Rauwolfia vomitoria, a medicinal plant. The genetic variants of this plant in different Himalayan ranges have different concentration and potency of the active chemical reserpine. This type of biodiversity is called as:
| 1. | Genetic diversity | 2. | Species diversity |
| 3. | Ecological diversity | 4. | Biosphere diversity |
Subtopic: Introduction & Types |
87%
From NCERT
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The following pie chart proportionates the number of species in various invertebrate taxa. A, B and C will represent:
| A | B | C | |
| 1. | Insects | Echinoderms | Molluscs |
| 2. | Insects | Molluscs | Crustaceans |
| 3. | Crustaceans | Insects | Molluscs |
| 4. | Molluscs | Crustaceans | Insects |
Subtopic: Magnitude of Biodiversity |
93%
From NCERT
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The following pie chart proportionates the number of species in various vertebrate taxa. What will be true regarding the animals shown in the pie chart?
1. Only Statement I and Statement II.
2. Only Statement I and Statement III.
3. Only Statement II and Statement III.
4. Statement I, Statement II and Statement III.
| 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’. |
2. Only Statement I and Statement III.
3. Only Statement II and Statement III.
4. Statement I, Statement II and Statement III.
Subtopic: Magnitude of Biodiversity |
59%
From NCERT
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How many of the given statements will be true regarding the graph showing species – area relationship?
| 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 |
Subtopic: Biodiversity Patterns |
67%
From NCERT
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The given figure shows one of the most important causes of the loss of biodiversity on Earth.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| 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. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Loss of Biodiversity |
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Match each picture in Table I with the name of the organism in Table II and select the correct match from the codes given.
| 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 |
Subtopic: Loss of Biodiversity |
82%
From NCERT
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The beautiful flowers shown in the picture actually belong to a plant infamously called as the ‘Terror of Bengal’. What will be true for this plant?
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect.
| Statement I: | It was always a native of India. |
| Statement II: | It reproduces very slowly with the help of offset. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect.
Subtopic: Loss of Biodiversity |
72%
From NCERT
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Study the given picture and select the correct statements:
1. Only Statement I is correct.
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
| 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. |
2. Only Statement II is correct.
3. Both Statement I and Statement II are correct.
4. Both Statement I and Statement II are incorrect.
Subtopic: Loss of Biodiversity |
84%
From NCERT
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What will be true for the portion highlighted in green in the map shown?
| 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 |
Subtopic: Biodiversity Patterns |
92%
From NCERT
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