Q. No.The first living organisms that appeard on the planet, according to the most accepted
view, were
1. anaerobic
2. aerobic
3. photosynthetic
4. none of the above
Potato and sweet potato
| 1. | have edible parts which are homologous organs |
| 2. | have edible parts which are analogous organs |
| 3. | have been introduced in India from the same place |
| 4. | are two species of the same genus. |
The early-stage human embryo distinctly possesses
1. gills
2. gill slits
3. external ear (pinna)
4. eyebrows
Wings of pigeon, mosquito and bat show
1. divergent evolution
2. atavism
3. convergent evolution
4. all of these
Genetic drift operates only in
1. island population
2. smaller population
3. larger population
4. none of these.
The cranial capacity was largest among the
| 1. | Peking man | 2. | Java ape man |
| 3. | African man | 4. | Neanderthal man |
The random changes in the allele frequency occurring by chance is termed as
1. genetic variability
2. genetic drift
3. gene migration
4. mutation
Which of these are considered most essential in the origin of life?
1. Enzymes
2. Nucleic acids
3. Carbohydrates
4. Proteins
A baby has been born with a small tail. It is a case exhibiting
1. retrogressive evolution
2. mutation
3. atavism
4. metamorphosis.
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