Evolution Chapter-Wise Test 15

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is incorrect?

Natural selection leads to adaptation in populations.
Mutations always result in beneficial changes.
Fossil records provide insights into evolutionary changes over time.
Lamarck’s theory suggested the inheritance of acquired traits.
2

Mutations do not always result in beneficial changes; they can also be harmful or neutral.

Which of the following statements is correct?

Analogous organs provide evidence of common ancestry.
Genetic recombination decreases genetic variability in populations.
Mutation introduces new genetic variations into populations.
Lamarck proposed the theory of natural selection.
3

Mutation introduces new genetic variations, which can contribute to evolutionary change.

Which of the following concepts was rejected by modern evolutionary biology?

Natural Selection
Mutation Theory
Lamarckism
Hardy-Weinberg Equilibrium
3

Lamarck’s theory of inheritance of acquired characteristics has been rejected in favor of Darwin’s theory of natural selection.

Which hominid species lived in East African grasslands and used stone tools about 2 million years ago?

Homo sapiens
Homo erectus
Australopithecus
Neanderthal Man
3

Australopithecus lived in East African grasslands about 2 million years ago and used primitive stone tools.

Which mammal, resembling modern-day shrews, is considered one of the first mammals?

Australopithecus
Coelacanth
Ichthyosaur
Shrew-like Mammals
4

Shrew-like mammals were among the first mammals, small in size and viviparous, marking the transition to mammalian evolution.

Which scientist’s work on population dynamics influenced Darwin’s theory of natural selection?

Jean-Baptiste Lamarck
Gregor Mendel
Thomas Malthus
Hugo de Vries
3

Thomas Malthus’s work on population growth and resource limitation influenced Darwin’s concept of natural selection.

Which of the following is correct?

Homo sapiens appeared before Homo erectus.
Darwin’s theory emphasizes survival of the fittest through natural selection.
Panspermia suggests life originated from non-living organic molecules on Earth.
Genetic drift is more significant in large populations.
2

Darwin’s theory emphasizes survival of the fittest through natural selection as a key driver of evolution.

Which of the following is incorrect?

Mutation introduces genetic variation.
Hardy-Weinberg equilibrium is maintained without evolutionary forces.
Paleontology studies genetic sequences of organisms.
Industrial melanism is an example of natural selection.
3

Paleontology studies fossils and evolutionary history, not genetic sequences.

Which of the following species is considered the first true human with advanced tool use and larger brain capacity?

Homo habilis
Australopithecus
Homo erectus
Neanderthal Man
3

Homo erectus, with a larger brain capacity and advanced tool use, is considered the first true human species.

Which of the following is incorrect?

Homologous organs have similar structures but different functions.
Panspermia suggests life originated from space.
Genetic drift has a greater impact on large populations.
Adaptive radiation results in the formation of new species.
3

Genetic drift has a greater impact on small populations, not large ones.

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