Biology : Evolution

Among the following sets of examples for divergent evolution, select the incorrect option :

• Forelimbs of man, bat and cheetah

• Heart of bat, man and cheetah

• Eye of octopus, bat and man

• Brain of bat, man and cheetah

The similarity of bone structure in the forelimbs of many vertebrates is an example of

• Homology

• Analogy

• Adaptive radiation

• Convergent evolution

The appearance of antibiotic-resistant bacteria is an example of

• adaptive radiation

• transduction

• Pre-existing variation

• divergent evolution in the population

Which one of the following graphs correctly describes disruptive selection? When studying fitness level associated with body size?

Ancestor of man who first stood erect was

• Australopithecus

• Cro-magnon

• Java-ape man

• Peaking man

Origin of life occurred in

• Precambrian

• Coenozoic

• Palaeozoic

• Mesozoic

The most recent and direct pre-historic ancestor is

• Cro-magnon

• Neanderthal

• Pre-neaderthal

• None of these

Darwins finches represent

• Morphological variations

• Geographical isolations

• Climate variations

• Reproductive isolation

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and

• Evolution

• Limiting factors

• Saltation

• Natural selection

Which one of the following in birds indicates their reptilian ancestry?

• Scales on their hindlimbs

• Four-chambered heart

• Two special chambers crop and gizzards in their digestive tract 

• Egg with a calcareous shell