Q. No.Which of the following sets do not have homologous organs?
1.
Mouth parts of cockroach and butterfly
2.
Wings of butterfly and bird
3.
Wings of mosquito and butterfly
4.
Forelegs of horse and paddles of whale
Which of the following is the relatively most accurate method for dating fossils?
(1) Pottasium-argon method
(2) Uranium-lead method
(3) Electron-spin resonance method
(4) Radio-carbon method
At a particular locus, frequency of 'A' allele is 0.6 and that of 'a' is 0.4. What would be the frequency of heterozygotes in a randomly mating population of equilibrium ?
(1) 0.16
(2) 0.36
(3) 0.48
(4) 0.24
Speciation of sympatric species is due to
| 1. | geographic isolation |
| 2. | reproductive isolation |
| 3. | isolation/separation |
| 4. | migration |
Flame cells and Malpighian tubules are the analogous organ in
| 1. | insects and arthropods respectively |
| 2. | arthropods and echinodermates respectively |
| 3. | helminths and arthropods with other insect respectively |
| 4. | arthropds and other insect with helminths respectively |
Tendrils in plants are an exapmle of
1. Convergent evolution
2. Radiation
3. Divergent evolution
4. Co-evolution
Theory of 'Saltations' was given by
| 1. | G Mendel | 2. | Hugo de Vries |
| 3. | J B S Haldane | 4. | H J Miller |
The animal group which does not exist in Galapagos island is
| 1. | Insects | 2. | Protozoa |
| 3. | Crustacea | 4. | Amphibia |
Appearence of dark-coloured pepper moths among the light-coloured ones as a result of increased industrial pollution is an example of
| 1. | Disruptive selection |
| 2. | Stabilizing selection |
| 3. | Directional selection |
| 4. | None of the above |
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