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Evolution

Multiple Choice Questions

61.
During which geological period of evolution did the greatest diversification of life occurred on the earth?

Permian

Jurassic

Cambrian

Ordovician

Cambrian

The Cambrian explosion in the Cambrian period marks the occurrence of greatest diversification on the earth.

Most major phyla appeared (indicated by fossil study) divergence of modern Metazoan phyla occurred and major diversification of other organisms.

Before this period, most organisms were simple however, this changed after Cambrian period, the diversification rate accelerated and the diversity of life began to resemble that of today.

62.

About how long ago was the earth formed

3 billion years ago
10 billion years ago
4.6 billion years ago
20 billion years ago

63.

Total number of bones in the hindlimb of a man is

64.

The diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos islands, as observed by Darwin, provides evidence for