Earth Summit 2012 was held in:
1. | Rio | 2. | Johannesberg |
3. | Paris | 4. | Geneva |
The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as:
1. | CITES Convention | 2. | The Earth Summit |
3. | G-16 Summit | 4. | MAB Programme |
Assertion (A): | Biologists are not sure about how many prokaryotic species there might be. |
Reason (R): | A large number of species have not been data based so far. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | There is a steady increase in species richness from the arctic to the tropics. |
Reason (R): | Seasonal variation is substantially more in tropics than in arctics. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | Species diversity contributes to the well-being of an ecosystem. |
Reason (R): | Rich biodiversity contributes to higher productivity of an ecosystem. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | Non-native introduced species always have a negative impact on the ecosystem in which they have been introduced. |
Reason (R): | Non-native species always become invasive in the introduced ecosystem. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | Conserving the biological diversity of the ecological hotspots is very important component of efforts to safeguard the world’s biological heritage. |
Reason (R): | The hotspots of biodiversity cover a large percentage of the land area of earth. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | Ex-situ conservation, while helpful in humankind's efforts to sustain and protect our environment, is rarely enough to save a species from extinction. |
Reason (R): | It is to be used as a last resort, or as a supplement to in-situ conservation. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | Biosphere reserves attempt to achieve three interconnected functions: conservation, development and logistic support. |
Reason (R): | They are legally protected areas where no human activity is allowed. |
In the light of the above statements, choose the most appropriate answer from the options given below :
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Assertion (A): | The current mass extinction is different from the previous episodes of mass extinctions. |
Reason (R): | It is happening at a faster rate and is mainly anthropogenic in nature. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |