Evolution Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which structure is an example of an analogous organ?

Forelimbs of mammals
Thorns of Bougainvillea and tendrils of Cucurbita
Wings of butterfly and bird
Flippers of whales and dolphins
3

Wings of butterfly and bird are analogous structures, performing similar functions but having different evolutionary origins.

Which scientist proposed that mutations are the primary cause of evolution and called it ‘saltation’?

Charles Darwin
Alfred Wallace
Hugo de Vries
Jean-Baptiste Lamarck
3

Hugo de Vries suggested that mutations cause large, sudden evolutionary changes, a process he termed ‘saltation’.

Which species is considered the closest extinct relative of modern humans?

Homo habilis
Neanderthal Man
Australopithecus
Homo erectus
2

Neanderthal Man is considered the closest extinct relative of modern humans, with a brain size comparable to Homo sapiens.

Which of the following statements is correct?

Miller’s experiment provided evidence for the theory of special creation.
Louis Pasteur disproved the theory of spontaneous generation.
Chemical evolution was proven incorrect by Miller’s experiment.
The first form of life was believed to be multi-cellular.
2

Louis Pasteur's experiment showed that life arises from pre-existing life, disproving the theory of spontaneous generation.

Which of the following statements is correct?

Analogous organs have similar structures due to common ancestry.
Mutation is the only mechanism of genetic variation.
Hardy-Weinberg equilibrium is disrupted by genetic drift.
Fossils do not provide direct evidence of evolution.
3

Genetic drift, along with mutation, gene flow, and selection, disrupts Hardy-Weinberg equilibrium by altering allele frequencies.

Which of the following statements is correct?

Genetic recombination decreases genetic diversity in populations.
Mutation is the only source of genetic variation.
Homo erectus was the first hominid to use fire.
Hardy-Weinberg equilibrium describes continuous allele frequency changes.
3

Homo erectus is known as the first hominid to use fire, marking an important stage in human evolution.

Which of the following is correct?

Mutation is always harmful to populations.
Hardy-Weinberg equilibrium requires no mutation, selection, or gene flow.
Industrial melanism is unrelated to natural selection.
Lamarck’s theory of use and disuse is widely accepted today.
2

Hardy-Weinberg equilibrium is maintained in the absence of mutation, natural selection, gene flow, genetic drift, and non-random mating.

Which term describes the development of species with similar traits in different geographical areas?

Adaptive Radiation
Convergent Evolution
Parallel Evolution
Divergent Evolution
3

Parallel evolution occurs when species in different geographical areas evolve similar traits independently.

Which of the following is incorrect?

Homo sapiens evolved before Homo habilis.
Chemical evolution refers to the formation of organic molecules from inorganic precursors.
Genetic drift is more pronounced in small populations.
Natural selection enhances the survival of advantageous traits.
1

Homo habilis appeared before Homo sapiens in the evolutionary timeline.

Which event is considered the origin of the first cellular life forms on Earth?

Chemical Evolution
Spontaneous Generation
Panspermia
Adaptive Radiation
1

Chemical evolution led to the formation of the first cellular life forms from non-living organic molecules.

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