Natural Selection MCQs with Answers

adminApril 6, 2024

0 27 2 minutes read

Welcome to the Natural Selection MCQs with Answers. In this post, we have shared Natural Selection Online Test for different competitive exams. Find practice Natural Selection Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Natural Selection.

Natural selection is a fundamental mechanism of evolution that drives the adaptation and survival of species over time. Introduced by Charles Darwin, natural selection explains how advantageous traits become more common in a population due to their benefits for survival and reproduction.

Key principles of natural selection include variation, inheritance, and differential survival. In any given population, individuals exhibit variations in traits, such as size, color, or behavior. These traits are often inherited from one generation to the next. Natural selection acts on these variations, favoring individuals with traits that enhance their ability to survive and reproduce in their specific environment.

Differential survival and reproduction lead to the gradual increase of beneficial traits within a population. For instance, organisms with traits that improve their ability to find food, evade predators, or attract mates are more likely to pass those traits on to their offspring. Over time, these advantageous traits become more prevalent, leading to evolutionary changes within the population.

Natural selection is a key concept in evolutionary biology and ecology. It helps explain the diversity of life forms and their adaptation to various environments. Modern advancements, including population genetics and molecular evolution, have further refined our understanding of natural selection by providing insights into the genetic basis of adaptive traits and evolutionary processes.

Natural Selection Online Quiz

By presenting 3 options to choose from, Natural Selection Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Natural Selection Questions and Answers and click over the correct answer.

Test Name: Natural Selection MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply click on question and comment below that question. so that we can update the answer in the quiz section.

Natural Selection

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1 / 40

Which of the following is NOT a condition for natural selection to occur?

Non-random mating

Differential survival and reproduction

Genetic variation within the population

2 / 40

The phenomenon where females choose mates based on specific traits, leading to the evolution of these traits, is called _____.

Female choice

Male competition

Sexual dimorphism

3 / 40

The process by which a new species evolves from a pre-existing species is called _____.

Divergence

Speciation

Convergence

4 / 40

Evolution by natural selection requires _____.

Homogeneous environmental conditions

Differential reproductive success

Lack of genetic variation

5 / 40

The process by which traits become more common in a population over time due to natural selection is called _____.

Genetic drift

Evolution

Speciation

6 / 40

Sexual selection is a type of natural selection that operates based on _____.

Random mating patterns

Mate choice and competition for mates

Genetic drift

7 / 40

Which of the following is an example of artificial selection?

Selective breeding of dogs for specific traits

Finches with different beak sizes on different islands

Wolves adapting to their environment

8 / 40

Natural selection is the process by which _____.

Organisms with advantageous traits survive and reproduce

Organisms change their genetic makeup

Environmental conditions remain constant

9 / 40

The bottleneck effect and founder effect are examples of _____.

Gene flow

Natural selection

Genetic drift

10 / 40

The ability of a population to undergo natural selection depends on _____.

Absolute fitness

Genetic variation

Geographic isolation

11 / 40

The bottleneck effect occurs when _____.

New individuals immigrate into a population

Individuals move between populations

A large portion of a population is killed, leaving only a few survivors

12 / 40

The individual credited with formulating the theory of natural selection is _____.

Gregor Mendel

Charles Darwin

Alfred Russel Wallace

13 / 40

In natural selection, the ultimate source of variation is _____.

Genetic drift

Gene flow

Mutation

14 / 40

The founder effect occurs when _____.

A large portion of a population is killed

Individuals move between populations

A small group of individuals establishes a new population

15 / 40

The genetic composition of a population changes over time due to _____.

Gene flow

Genetic drift

Natural selection

16 / 40

Which of the following is an example of directional selection in action?

Stable population sizes over time

No change in allele frequencies over time

Dark-colored moths becoming more common during industrial pollution

17 / 40

Evolutionary changes that occur rapidly over a short period of time are known as _____.

Gradualism

Punctuated equilibrium

Adaptive radiation

18 / 40

Intersexual selection involves _____.

Choice of mates by one sex based on specific traits

Selection by the environment

Competition between individuals of the same sex for mates

19 / 40

The term "adaptation" refers to _____.

Traits that increase an organism's fitness

Random genetic changes

Traits that decrease an organism's fitness

20 / 40

Which of the following is NOT a requirement for natural selection to occur?

Uniformity of environmental conditions

Heritability of traits

Variation within a population

21 / 40

The term "fitness" in the context of natural selection refers to an organism's _____.

Ability to survive and reproduce

Intelligence

Physical strength

22 / 40

The concept of "survival of the fittest" refers to _____.

Luck determining survival

Individuals with traits best suited to the environment survive and reproduce

The strongest individuals surviving

23 / 40

Disruptive selection favors individuals _____.

With phenotypic traits at both extremes of the range

With no specific phenotypic traits

With phenotypic traits at the midpoint of the range

24 / 40

Natural selection acts on _____.

Genotypes

Phenotypes

Chromosomes

25 / 40

The process by which individuals with certain traits produce more offspring than individuals with other traits is called _____.

Genetic drift

Differential reproductive success

Gene flow

26 / 40

In the context of natural selection, fitness refers to _____.

Ability to survive and reproduce

Overall health

Physical strength

27 / 40

Evolutionary fitness is measured by an individual's _____.

Physical strength

Intelligence

Reproductive success

28 / 40

Evolutionary changes that occur due to random fluctuations in allele frequencies are known as _____.

Natural selection

Genetic drift

Mutation

29 / 40

The study of the distribution of species and their evolutionary relationships is called _____.

Phylogenetics

Biogeography

Paleontology

30 / 40

Which of the following is NOT a mechanism of evolution?

Mutation

Natural selection

Genetic uniformity

31 / 40

In natural selection, the "selective pressure" refers to _____.

Genetic drift

Environmental factors that favor certain traits

Random genetic changes

32 / 40

The process by which similar traits evolve independently in different species due to similar environmental pressures is called _____.

Divergent evolution

Coevolution

Convergent evolution

33 / 40

Directional selection favors individuals _____.

With no specific phenotypic traits

With phenotypic traits at the midpoint of the range

With phenotypic traits at one extreme of the range

34 / 40

Stabilizing selection favors individuals _____.

With extreme phenotypic traits

With intermediate phenotypic traits

With no specific phenotypic traits

35 / 40

Genetic variation in a population arises from _____.

Only natural selection

Genetic recombination

Mutation

36 / 40

The process by which traits that confer a survival advantage become more common in a population over time is called _____.

Genetic drift

Gene flow

Natural selection

37 / 40

Which of the following factors can contribute to genetic variation within a population?

Migration and genetic drift

Natural selection and gene flow

Mutation and genetic recombination

38 / 40

Intrasexual selection involves _____.

Competition between individuals of the same sex for mates

Choice of mates based on specific traits

Selection by the environment

39 / 40

The principle of natural selection was introduced in the book titled _____.

"Principles of Geology"

"The Descent of Man"

"On the Origin of Species"

40 / 40

The process by which unrelated species evolve similar traits due to similar environmental pressures is called _____.

Divergent evolution

Convergent evolution

Coevolution

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adminApril 6, 2024

0 27 2 minutes read