Q. No.According to the Darwinian concept of evolution, a giraffe has a long neck because:
1.
it was always like that since the beginning
2.
during evolution the number of cervical vertebrae got increased
3.
its ancestors stretched their necks to get food
4.
ancestral giraffes with longer necks got more food and left more surviving offspring
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Self pollination leading to self fertilization in a plant will be an extreme example of:
1. bottleneck effect
2. founder effect
3. out breeding
4. assortative mating
Which of the following is not a finding observed by Darwin, when he landed on the Galapagos Islands?
| 1. | Woodpeckers were absent on the islands |
| 2. | The island species resembled the mainland species |
| 3. | Islands contain more different species of finches than the mainland |
| 4. | The corresponding size of the species was smaller on the islands than the species on the mainland |
Identify the incorrect fact regarding the Neanderthal man:
1. Cranial capacity of around 1400 cc
2. Lived in East and Central Africa
3. Used hides to protect their bodies
4. Buried their dead
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If there are two forms of a specific enzyme in a population, and if the relative frequencies of the individuals possessing each form of the enzyme changes, then certainly there is:
| 1. | mutation | 2. | genetic drift |
| 3. | gene migration | 4. | evolution |
The best evidence for tracing phylogeny amongst a group of organisms will be similarities in their:
| 1. | anatomy | 2. | DNA and Proteins |
| 3. | development | 4. | courtship behavior |
Industrial melanism is an excellent example of ‘evolution in action’ where the selecting agent is:
| 1. | humans | 2. | toxins from smoke |
| 3. | birds | 4. | tree bark |
Members belonging to the same biological species are potentially able to:
1. compete with members of other species only
2. express all the same genes in all their cells
3. breed with members of other biological species
4. interbreed and produce fertile offspring
Flowering plants (angiosperms) first appeared during :
1. Paleozoic era
2. Carboniferous period
3. Cretaceous period
4. Cenozoic era
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Species formation without branching of the evolutionary line of descent is called as:
1. anagenesis, or phyletic evolution
2. cladogenesis, or divergent evolution
3. convergent evolution
4. allopatry
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