Free Concept of Evolution MCQs with Answers

• A. Increases genetic differences
• B. Decreases genetic differences
• C. Has no effect
• D. Causes speciation

Explanation: Gene flow (migration) decreases genetic differences between populations by exchanging alleles.

• A. Constant slow change
• B. Rapid change followed by stability
• C. No change over time
• D. Only gradual change

Explanation: Eldredge and Gould's punctuated equilibrium proposes long periods of stability interrupted by rapid speciation events.

• A. Static
• B. Dynamic
• C. May be static or dynamic
• D. None of these

Explanation: A community is a collection of populations living together and interacting in an area, and its species composition and population sizes…

• A. It is predictive
• B. It has explanatory power
• C. It discourages suggestion of different hypotheses
• D. None of these

Explanation: A productive scientific theory makes predictions, explains observations and stimulates new questions and hypotheses for testing.

• A. Scientific law
• B. Theory
• C. Data
• D. Deduction

Explanation: A scientific theory is a well-supported explanatory framework built from hypotheses that have survived many tests and observations.

• A. Experimental inquiry
• B. Esthetic preference
• C. Philosophical ideas
• D. Imaginations

Explanation: Biological science relies on experimental inquiry, in which observations lead to hypotheses that are tested through controlled evidence…

• A. Biome
• B. Phyletic lineage
• C. Community
• D. Population

Explanation: A phyletic lineage is a continuous evolutionary sequence in which each species is considered to have descended from the species…

• A. Older sediment layers have equal amount of these radioactive isotopes as that of the young ones
• B. Older sediment layers have less amount of these radioactive isotopes as that of the young ones.
• C. Older sediment layers have greater amount of these radioactive isotopes as that of the young ones.
• D. Older sediment layers did not have these radioactive isotopes

Explanation: Radioactive parent isotopes decay with time, so an older rock generally contains less of the original radioactive isotope than a younger…

• A. Environmental biologist
• B. Paleontologist
• C. Marine biologist
• D. Social biologist

Explanation: Paleontologists study fossils and the rock layers in which they occur, allowing them to identify which organisms lived during different…

• A. Population
• B. Community
• C. Biome
• D. Habitat

Explanation: A biome is a large regional community characterized mainly by its climate and the organisms adapted to that climate, such as a desert or…

• A. Population
• B. Community
• C. Biome
• D. Habitat

Explanation: A community consists of populations of different species living and interacting in the same habitat.

• A. Community
• B. Population
• C. Ecosystem
• D. Biome

Explanation: A population is made up of organisms of the same species living in the same geographical area at the same time.

• A. Environmental biology
• B. Social biology
• C. Human biology
• D. Both b and c

Explanation: Social biology studies how human beings behave in groups and how communal life is organized within different environments.

• A. Environmental Biology
• B. Historical biology
• C. Palaeontology
• D. Social biology

Explanation: Palaeontology is the study of fossils, which preserves evidence about organisms that lived in the geological past and helps reconstruct…

• A. Accumulated Data
• B. Observation
• C. Hypothesis
• D. Conclusion

Explanation: A hypothesis is a tentative, testable explanation proposed from observations and available evidence, so it is often described at an…

• A. Hypothesis ->Accumulated data -> observation & experimentation -> conclusion
• B. New data -> Conclusion -> Accumulated data -> Observation & experimentation
• C. Accumulated data - New data - Observation & experimentation - Hypothesis -> Conclusion
• D. Accumulated data -> Hypothesis -> Observation & experimentation -> New data -> Conclusion

Explanation: A scientific investigation generally begins with accumulated observations or data, followed by a hypothesis.

• A. Species
• B. Community
• C. Ecosystem
• D. Population

Explanation: A population consists of members of the same species living in the same geographical area at the same time.

• A. Biosphere
• B. Ecosystem
• C. Population
• D. Species

Explanation: A species is a group of similar organisms that can interbreed and produce fertile offspring.

• A. Biosphere
• B. Community
• C. Population System
• D. Ecosystem
• E. Species

Explanation: A community consists of populations of different species living and interacting in the same area.

• A. Fungi
• B. Prokaryotes
• C. protists
• D. Piantae

Explanation: Protoctista, commonly called Protista, is a kingdom containing mostly unicellular eukaryotic organisms such as Amoeba, Paramecium and many…