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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following are most suitable indicators of SO2 pollution in the environment?
1. Lichens
2. Conifers
3. Algae
4. Fungi
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following had the smallest brain capacity?
1. Homo erectus
2. Homo sapiens
3. Homo neanderthalensis
4. Homo habilis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyForelimbs 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology