- 1(current)
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
Please attempt this question first.
Hints
Please attempt this question first.
| Assertion (A): | Tilman found that plots with more species showed less year-to-year variation in total biomass |
| Reason (R): | He showed in his experiment that increased diversity contributed to higher productivity. |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of the (A). |
| 2. | Both (A) and (R) are True and the (R) is not the correct explanation of the (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Importance of Biodiversity |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
| Assertion (A): | Paul Ehrlich explained the essentiality· of biodiversity for ecosystem health. |
| Reason (R): | According to Paul Ehrlich, airplane and rivets are analogy to ecosystem and species respectively |
| 1. | Both (A) and (R) are True and the (R) is the correct explanation of the (A). |
| 2. | Both (A) and (R) are True and the (R) is not the correct explanation of the (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Importance of Biodiversity |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion (A): | Ecosystems with higher species richness tend to be more stable and resilient to disturbances. |
| Reason (R): | Higher species richness reduces competition among species, leading to ecosystem stability. |
| 1. | Both (A) and (R) are True and (R) explains (A). |
| 2. | Both (A) and (R) are True but (R) does not explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Importance of Biodiversity | Biodiversity |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
© 2025 GoodEd Technologies Pvt. Ltd.