Q. No.Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
1.
They could separate combinations of molecules from the surroundings
2.
They were able to reproduce
3.
They were partially isolated from the surroundings
4.
They could maintain an internal environment
| 1. | They could separate combinations of molecules from the surroundings |
| 2. | They were able to reproduce |
| 3. | They were partially isolated from the surroundings |
| 4. | They could maintain an internal environment |
Select the correct statement from the following:
| 1. | Darwin variations are small and directionless |
| 2. | fitness is the end result of the ability to adapt and gets selected by nature |
| 3. | all mammals except whales and have seven cervical vertebrae |
| 4. | Mutations are random and directional |
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The concept of chemical evolution is based on:
| 1. | crystallization of chemicals |
| 2. | interaction of water, air, and clay under intense heat |
| 3. | effect of solar radiation on chemicals |
| 4. | possible origin of life by a combination of chemicals under suitable environmental conditions |
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In the case of peppered moth (Biston betularia), the black-coloured form became dominant over the light-coloured form in England during the industrial revolution. This is an example of:
| 1. | natural selection, whereby the darker forms were selected |
| 2. | appearance of the darker coloured individuals due to very poor sunlight |
| 3. | protective mimicry |
| 4. | inheritance of darker colour character acquired due to the darker environment |
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Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:
1. Adaptive radiation
2. Natural selection
3. Migration
4. Divergent evolution
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Genetic drift is most powerful in
1. changing environments
2. small populations
3. large populations
4. stable environments
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Which of the following is used as an atmospheric pollution indicator?
| 1. | Lepidoptera | 2. | Lichens |
| 3. | Lycopersicon | 4. | Lycopodium |
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Animal husbandry and plant breeding programmes are the examples of:
1. reverse evolution
2. artificial selection
3. mutation
4. natural selection
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Evolution of life shows that life forms had a trend of moving from:
1. land to water
2. dryland to wet land
3. fresh water to sea water
4. water to land
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