Q. No.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%
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
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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