Q. No.Identify the correct statement:
1.
As the coacervates do not have lipid outer membranes and cannot reproduce, they alone could not have been the precursors of life.
2.
The microspheres could not be induced to constrict but had a large amount of diversity.
3.
The earliest life was probably not driven by solar energy as is seen today.
4.
Protobionts cannot separate a combination of molecules from the surroundings or maintain an internal
environment, but are able to reproduce.
environment, but are able to reproduce.
Which of the following statements is incorrect regarding an evolutionary trend?
| 1. | It is the continuous change of a character within an evolving lineage. |
| 2. | The number of trends in any lineage is the same as the number of characters evolving. |
| 3. | A trend may be progressive or retrogressive. |
| 4. | Direction and speed of evolutionary trends in a lineage are universal throughout the family and are not subject to variations. |
Which of the following is not a major evolutionary trend seen in the evolution of horses?
| 1. | Progressive increase in the number of toes |
| 2. | Increase in the complexity of the molar teeth |
| 3. | Lengthening of the limbs in general |
| 4. | Enlargement of the brain |
Which of the following is not a proposition of Lamarckism?
| 1. | Living organisms or their component parts tend continually to increase in size |
| 2. | Production of new organs results from a new need due to a change in the environment |
| 3. | If an organ is used constantly, it tends to get developed, whereas disuse results in degeneration |
| 4. | Modifications produced by the above mechanisms during the lifetime of an individual will not be inherited |
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Around 200 mya, some land reptiles went back to the water to evolve into fish-like reptiles, for example:
| 1. | Pareiasaurus | 2. | Pelycosaurus |
| 3. | Ichthyosaurs | 4. | Archosaurus |
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The loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population is called as:
| 1. | the bottleneck effect | 2. | the founder effect |
| 3. | assortative mating | 4. | random mating |
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The extinct reptilian lineage that evolved into dinosaurs and later on the birds is:
| 1. | Pelycosaurs | 2. | Synapsids |
| 3. | Tuataras | 4. | Thecodonts |
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Fishes with stout and strong fins that could move on land and go back to water existed about:
| 1. | 500 mya | 2. | 350 mya |
| 3. | 320 mya | 4. | 300 mya |
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According to the Darwinian concept of evolution, a giraffe has a long neck because:
| 1. | it was always like that since the beginning |
| 2. | during evolution the number of cervical vertebrae got increased |
| 3. | its ancestors stretched their necks to get food |
| 4. | ancestral giraffes with longer necks got more food and left more surviving offspring |
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Which of the following is not a finding observed by Darwin, when he landed on the Galapagos Islands?
| 1. | Woodpeckers were absent on the islands |
| 2. | The island species resembled the mainland species |
| 3. | Islands contain more different species of finches than the mainland |
| 4. | The corresponding size of the species was smaller on the islands than the species on the mainland |
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