Following are the two statements regarding the origin of life

I.  The earliest organisms that appeared on the earth were non-green presumably

anaerobes.

II. The first autotrophic organisms were the chemoautotrophs that never released

oxygen.

Of the above statements which one of the following options is correct?

1. II is correct but I is false

2. Both I and II are correct

3. Both I and II are false

4. I is correct but II is false 

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
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The wings of a bird and the wings of an insect are

1. homologous structures and represent divergent evolution

2. analogous structures and represent convergent evolution

3. phylogenetic structures and represent divergent evolution

4. homologous structures and represent convergent evolution

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
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Which of the following are most suitable indicators of SO2 pollution in the environment?

1. Lichens

2. Conifers

3. Algae

4. Fungi

Subtopic:  Types of Natural Selection |
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Which of the following had the smallest brain capacity?

1. Homo erectus

2. Homo sapiens

3. Homo neanderthalensis

4. Homo habilis

Subtopic:  Evolution Prior to Ape Man: 1 | Evolution Prior to Ape Man: 2 | Evolution Prior to Ape Man |
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A population will not exist in Hardy-Weinberg equilibrium if

1. individuals mate selectively

2. there are no mutations

3. there is no migration

4. the population is large

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law: 2 | Hardy Weinberg Law |
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A location with luxuriant growth of lichens on the trees indicates that the:-

1. trees are very healthy

2. trees are heavily infested

3. location is highly polluted

4. location is not polluted

Subtopic:  Types of Natural Selection |
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In a population of 1000 individuals 360 belongs to genotype AA, 480 to Aa and the

remaining 160 to aa. Based on this data, the frequency of allele A in the population is

1. 0.4

2. 0.5

3. 0.6

4. 0.7

Subtopic:  Hardy Weinberg Law: 1 | Hardy Weinberg Law |
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Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and

forelimbs of bats used in flying are an example of

1. analogous organs

2. adaptive radiation 

3. homologous organs

4. convergent evolution

Subtopic:  Concept of Organic Evolution: Evidence: 1 | Concept of Organic Evolution: Evidence |
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Which one of the following are analogous structures?

1. Wings of bat and wings of pigeon

2. Gills of prawn and lungs of man

3. Thorns of Bougainvillea and tendrils of Cucurbita

4. Flippers of dolphin and legs of horse

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
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The process by which organisms with different evolutionary history evolve similar

phenotypic adaptations in response to a common enviroment challenge, is called 

1. natural selection 

2. convergent evolution 

3. non-random evolution 

4. adaptive radiation 

Subtopic:  Concept of Organic Evolution: Evidence: 2 | Concept of Organic Evolution: Evidence |
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