- 1(current)
Q. No.U238, the radioactive isotope of uranium, is very useful in absolute dating of rocks. It’s half life is about:
1. 4500 years
2. 4.5 million years
3. 45 million years
4. 4.6 billion years
The term “Homologous “ to mean the organs of different species that are related to each other through common descent, although now functionally different, was coined by :
1. Richard Owen
2. Erasmus Darwin
3. Ernst Haeckel
4. John Ray
The “Replica Plating Experiment” proved that :
1. most mutations are harmful or neutral
2. mutations are recurring in nature
3. all mutations are pre-adaptive in nature
4. mutations occur in a non-directional manner
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Which of the following is an example for link species?
1. Lobe fish
2. Dodo bird
3. Sea weed
4. Chimpanzee
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Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as:
1. Adaptive radiation
2. Natural selection
3. Migration
4. Divergent evolution
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following correctly describes the homologous structures?
1. Organs with anatomical similarities, but performing different functions.
2, Organs with anatomical dissimilarities, but performing same functions.
3. Organs that have no functions now, but had an important function in ancestors.
4. Organs appearing only in embryonic stage and disappearing later in the adult.
- 1(current)
Q. No.
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