Q. No.Industrial melanism observed in moth, Biston betularia, is which type of selection?
1. Stabilising
2. Directional
3. Disruptive
4. Artificial
The most accepted line of descent in human evolution is
| 1. | Australopithecus → Ramapithecus → Homo sapiens → Homo habilis |
| 2. | Homo erectus → Homo habilis → Homo sapiens |
| 3. | Ramapithecus → Homo habilis → Homo sapiens |
| 4. | Australopithecus → Ramapithecus → Homo erectus → Homo habilis → Homo sapiens |
Which of the following is an example for link species?
1. Lobed fin fish
2. Dodo bird
3. Sea weed
4. Chimpanzee
Match the scientists listed under column I with ideas listed column II.
|
Column l |
Column ll |
||
|
A. |
Darwin |
1 |
abiogenesis |
|
B. |
Oparin |
2 |
use and disuse of organs |
|
C. |
Lamarck |
3 |
continental drift theory |
|
D. |
Wagner |
4 |
evolution by natural selection |
Codes
| Options: | A | B | C | D |
| 1. | 1 | 4 | 2 | 3 |
| 2. | 4 | 1 | 2 | 3 |
| 3. | 2 | 4 | 3 | 1 |
| 4. | 4 | 3 | 2 | 1 |
In 1953 SL Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from pre-existing non-living organic molecules. The primitive earth conditions created include
| 1. | low temperature, volcanic storms, atmosphere rich in oxygen |
| 2. | low temperature, volcanic storms, reducing atmosphere |
| 3. | high temperature , volcanic storms, non-reducing atmosphere |
| 4. | high temperature , volcanic storms, reducing atmosphere containing CH4, NH3 etc. |
Variations during mutations of meiotic recombinations are
1. random and directionless
2. random and directional
3. random and small
4. random, small and directional
For the MN-blood group system, the frequencies of M and N alleles ar 0.7 and 0.3 respectively. The expected frequency of MN-blood group bearing organisms is likely to be
1. 42%
2. 49%
3. 9%
4. 58%
Fossils are generally found in
1. sedimentary rocks
2. igneous rocks
3. metamorphic rocks
4. any type of rock
Viviparity is considered to be more evolved because
| 1. | the young ones are left on their own |
| 2. | the young ones are protected by a thick shell |
| 3. | the young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival |
| 4. | the embryo takes a long time to develop |
Evolution of life shows that life forms had a trend of moving from:
1. land to water
2. dryland to wetland
3. freshwater to sea water
4. water to land
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