Q. No.Which of the following forests is known as the ‘lungs of the planet Earth’?
1. Taiga forest
2. Tundra forest
3. Amazon rainforests
4. Rainforests of North East India
1. Taiga forest
2. Tundra forest
3. Amazon rainforests
4. Rainforests of North East India
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which of the following group exhibit more species diversity?
| 1. | Gymnosperms | 2. | Algae |
| 3. | Bryophytes | 4. | Fungi |
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Which of the below-mentioned regions exhibit less seasonal variations?
| 1. | Tropics | 2. | Temperate |
| 3. | Alpines | 4. | Both (1) & (2) |
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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 |
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What is common to the techniques (i) in vitro fertilization, (ii) Cryo preservation, and (iii) tissue culture?
| 1. | All are in situ conservation |
| 2. | All are ex situ conservation methods |
| 3. | All require ultra-modern equipment and large space. |
| 4. | All are methods of conservation of extinct organisms. |
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| Assertion (A): | Genetic diversity serves as a way for populations to adapt to changing environments. |
| Reason (R): | Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species. |
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. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| 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. |
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| Assertion (A): | Large islands near the mainland will have more species than smaller islands more distant from the mainland. |
| Reason (R): | The species richness of an island is determined by colonization and extinction. |
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. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
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