Which one of the following experiments suggests that the simplest living organisms could not have originated spontaneously from non-living matter:
1. | Larva could appear in decaying organic matter |
2. | The meat was not spoiled when heated and kept sealed in a vessel |
3. | microbes did not appear in stored meat |
4. | Microbes appeared from unsterilized organic matter |
Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution:
1. | Production of 'Dolly', the sheep by cloning |
2. | Development of organs from 'stem' cells for organ transplantation |
3. | Development of transgenic animals |
4. | Prevalence of pesticide-resistant insects |
Which of the following is the relatively most accurate method for dating fossils:
1. Electron-spin resonance method
2. Uranium-lead method
3. Potassium–argon method
4. Radio-carbon method
There are two opposing views about the origin of modern man. According to one view, Homo erectus in Asia were the ancestors of modern man. A study of variation of DNA however suggested the African origin of modern man. What kind of observation of DNA variation could suggest this?
1. | Greater variation in Asia than in Africa |
2. | Similar variations in Africa and Asia |
3. | Variation only in Asia and no variation in Africa |
4. | Greater variation in Africa than in Asia |
Which of the following is not true for a species:
1. | Members of a species can interbreed |
2. | Variations occur among members of a species |
3. | Gene flow does not occur between the populations of a species |
4. | Each species is reproductively isolated from every other species |
De Vries gave his mutation theory on organic evolution while working on:
1. Oenothera lamarckiana
2. Drosophila melanogaster
3. Pisum sativum
4. Althea rosea
Species separated by geographical barriers are called:
1. Allopatric
2. Sympatric
3. Sibling
4. Endemic
Age of Dryopithecous is estimated to be:
1. 2.46 crore years
2. 2.46 lakh year
3. 1 lakh year
4. 1 crore year
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Which of the following statement is true:
1. | Homo erectus is direct ancestor of Homo sapiens |
2. | Neanderthal man is direct ancestor of modern man |
3. | Australopithecous is direct ancestor of modern man |
4. | Fossils of cromagnon man first found in Ethiopia |
Evolution of heart from one to two, three and four chambered proves:
1. Biogenetic law of Haeckel
2. Lamarckism
3. Hardy weinberg's law
4. Neo Darwinism