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Evolution

One Word Answers

111. Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato.

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Short Answer Type

112. Why are wings of a butterfly and of a bat are called analogous ?

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113.
State the Hardy-Weinberg principle.

Hardy-Weinberg principle. It states that allele frequencies in a population are stable and is constant from generation to generation.

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114. According to Hardy–Weinberg’s principle, the allele frequency of a population remains constant. How do you interpret the change of frequency of alleles in a population ?

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Multiple Choice Questions

115. Lamarck's theory of evolution is also called :

Survival of the fittest
Special creation theory
Inheritance of acquired characters
None of these.

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116. Cause of speciation is :

Random mating
Hybridization
Isolation
Migration

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117. Darwin's theory does not include :

Natural selection
Survival of the fittest
Evolution through inheritance
Struggle for existence.

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118. A bacterial culture is treated with streptomycin and a cast is made. A few columns are able to survive due to :

Selection
Adaptation
Induced mutation
Mimicry

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119. Darwin's theory states that :

Characters are acquired through inheritance
Nature selects species which can adapt
Species change morphologically with nature
Affect of environment on evolution.

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120. Hexaploid wheat developed through :

Hybridomas
Chromosome doubling
Hybridisation
Hybridisation and chromosome doubling

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