Evolution
Test 1

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is correct?

Darwin’s theory of natural selection includes the inheritance of acquired traits.
The first cellular life forms were aerobic.
Adaptive radiation results in species diversification from a common ancestor.
Panspermia proposes that life originated from inorganic molecules on Earth.
3

Adaptive radiation explains how species diversify from a common ancestor when exposed to different ecological niches.

Which of the following is incorrect?

Panspermia suggests life originated from outer space.
Analogous organs have similar functions but different structures.
Darwin’s theory of natural selection emphasizes survival of the fittest.
Gene flow increases genetic differences between populations.
4

Gene flow reduces genetic differences between populations by introducing new alleles.

Which of the following gases was NOT present in the primitive atmosphere of the Earth?

Methane
Oxygen
Ammonia
Water vapor
2

Oxygen was absent in the primitive atmosphere. The early Earth had a reducing atmosphere with gases like methane, ammonia, and water vapor.

Which concept explains the evolution of Australian marsupials into various forms from a common ancestor?

Genetic Drift
Adaptive Radiation
Mutational Evolution
Founder Effect
2

Adaptive radiation explains how Australian marsupials evolved into different forms, adapting to various ecological niches.

Which group of animals evolved from lobefin fishes?

Reptiles
Amphibians
Mammals
Birds
2

Amphibians evolved from lobefin fishes, which had strong fins that allowed them to move on land.

Which principle is violated when allele frequencies in a population change due to migration?

Mendel’s Law of Segregation
Hardy-Weinberg Principle
Darwin’s Natural Selection
Lamarckism
2

Migration causes gene flow, which violates the Hardy-Weinberg Principle by altering allele frequencies.

Which of the following statements is correct?

The Big Bang theory explains the origin of life on Earth.
Panspermia suggests that life came from outer space.
Spontaneous generation is the currently accepted theory of the origin of life.
Oparin and Haldane proposed that life originated from living organic molecules.
2

Panspermia suggests that life came from outer space, carried by spores or microorganisms.

Which of the following statements is correct?

Adaptive radiation is also known as convergent evolution.
Gene flow increases genetic differences between populations.
Embryological similarities provide evidence for common ancestry.
Mutation always leads to harmful effects in populations.
3

Embryological similarities, such as gill slits in vertebrate embryos, provide evidence for common ancestry.

Which adaptive feature enabled amphibians to survive on land?

Feathers
Gills
Lungs
Fins
3

Lungs allowed amphibians to breathe on land, contributing to their survival in terrestrial environments.

Which term describes the evolutionary process where species evolve in response to each other?

Adaptive Radiation
Genetic Drift
Co-evolution
Speciation
3

Co-evolution occurs when two species influence each other’s evolution through mutual interactions.

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