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. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | Georges Cuvier | 2. | Lyell |
3. | Hugo de Vries | 4. | Alfred Russell Wallace |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
I: | Nature selects for fitness. |
II: | Fitness is based on characteristics that are inherited. |
III: | Fitness is the end result of the ability to adapt and get selected by nature. |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | Branching descent and natural selection |
2. | Saltation and Catastrophism |
3. | Use and disuse of organs and inheritance of acquired traits |
4. | Reproductive isolation and Founder effect |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | continuous variations | 2. | mutations |
3. | genetic drift | 4. | genetic death |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | 20 billion years back | 2. | 10 billion years back |
3. | 4.5 billion years back | 4. | 3.0 billion years back |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | Neanderthals lived between 1,50,000 and 1,00,000 years back. |
2. | Modern Homo sapiens arose between 75000 and 10000 years ago. |
3. | Pre-historic cave art developed around 18000 years ago. |
4. | Agriculture came around 10000 years ago |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | Cranial capacity of around 1400 cc |
2. | Lived in East and Central Africa |
3. | Used hides to protect their bodies |
4. | Buried their dead |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
1. | 450 cc | 2. | 700 cc |
3. | 900 cc | 4. | 1000 cc |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.