EVOLUTION

The earth was originated how many years ago

• 4.5 million years ago

• 4.5 billion years ago

• 20 million years ago

• 20 billion years ago

The universe was originated how many years ago

• 4.5 million years ago

• 4.5 billion years ago

• 20 million years ago

• 20 billion years ago

Palentological evidences for evolution refer to the

• development of embryo

• homologous organs

• fossils

• analogous organ

Homologous organs show

• convergent evolution

• divergent evolution

• natural selection

• parallel evolution

Analogous organs arise due to

• divergent evolution

• artificial selection

• genetic drift

• convergent evolution

Fossils are generally found in

• Sedimentary rocks

• igneous rocks

• Metamorphic rocks

• Any type of rock

Which type of selection explains industrial melanism observed in moth , Biston bitularia?

• Stablising

• Directional

• Disruptive

• Artificial

Stablizing selection favours

• only one extreme form of trait

• both the extreme form of trait

• intermediate form of trait

• no form of trait

According to Hugo de Vries, Speciation is due to

• accumulation of small variations

• intraspecific breeding

• inter specific breeding

• saltation

the phenomenon of "Industrial melanism" demonstrates

• natural selection

• induced mutation

• genetic drift

• geographical isolation