1. | 20 billion years back | 2. | 10 billion years back |
3. | 4.5 billion years back | 4. | 3.0 billion years back |
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I: | Water vapour, methane, carbon dioxide, and ammonia released from molten mass covered the surface. |
II: | The UV rays from the sun broke up water into Hydrogen and Oxygen and the lighter H2 escaped. |
III: | Oxygen combined with ammonia and methane to form water, CO2, and other gases. |
IV: | As it cooled, the water vapour fell as rain, filling all the depressions and forming oceans. |
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1. | Spallanzani | 2. | Francesco Redi |
3. | Louis Pasteur | 4. | van Helmont |
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I: | The first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) |
II: | The formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents. |
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I: | All living organisms (species or types) that we see today were created as such. |
II: | Diversity was always the same since creation and will be the same in the future also. |
III: | Earth is about 4 billion years old. |
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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.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
I: | Fitness, according to Darwin, refers ultimately and only to reproductive fitness. |
II: | Those who are a better fit in an environment, leave more progeny than others. |
1. | Both Statement I and Statement II are correct and Statement II explains Statement I. |
2. | Statement I is correct and Statement II is incorrect. |
3. | Statement I is incorrect and Statement II is correct. |
4. | Both Statement I and Statement II are correct but Statement II does not explain Statement I. |
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1. | Georges Cuvier | 2. | Lyell |
3. | Hugo de Vries | 4. | Alfred Russell Wallace |
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
1. | Statement I is incorrect and Statement II is correct. |
2. | Statement I is correct and Statement II is incorrect. |
3. | Both Statement I and Statement II are correct and Statement II explains Statement I. |
4. | Both Statement I and Statement II are correct but Statement II does not explain Statement I. |
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.
1. | Both Statement I and Statement II are correct and Statement II explains Statement I. |
2. | Statement I is correct and Statement II is incorrect. |
3. | Statement I is incorrect and Statement II is correct. |
4. | Both Statement I and Statement II are correct but Statement II does not explain Statement I. |
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.