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Q. No.The Amazon Forest:
| I: | is a largely tropical rainforest in South Africa |
| II: | has the greatest biodiversity on Earth |
| III: | produces about 20% of total oxygen in the earth’s atmosphere through photosynthesis |
| 1. | Only I and II are correct |
| 2. | Only I and III are correct |
| 3. | Only II and III are correct |
| 4. | I, II and III are correct |
Subtopic: Biodiversity Patterns | Importance of Biodiversity | Loss of Biodiversity |
57%
From NCERT
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According to the species-area relationship, what happens to species richness as the area increases?
| 1. | It decreases exponentially. |
| 2. | It increases exponentially. |
| 3. | It increases at a decreasing rate. |
| 4. | It remains constant. |
Subtopic: Biodiversity Patterns |
From NCERT
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| Assertion (A): | A forest in a tropical region like equador has upto 10 times as many species of vascular plants as . a forest of equal area in a temperate region like the midwest of USA. |
| Reason (R): | Tropical environment unlike temperate ones, are less seasonal, relatively more constant and predictable. |
| 1. | (A) is True but (R) is False |
| 2. | (A) is False but (R) is True |
| 3. | Both (A) and (R) are True and (R) is correct explanation of (A) |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: Biodiversity Patterns |
58%
From NCERT
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