Speciation MCQs with Answers

adminApril 6, 2024

0 34 2 minutes read

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

Speciation is a fundamental concept in evolutionary biology that describes the process by which new species arise. This phenomenon is driven by genetic changes that accumulate over time, leading to the formation of distinct species from a common ancestor. Speciation can occur through various mechanisms, including allopatric, sympatric, parapatric, and peripatric speciation.

Allopatric speciation happens when a population is geographically divided, leading to reproductive isolation and divergent evolution. Over time, these separated groups evolve independently, eventually becoming distinct species. Sympatric speciation, on the other hand, occurs within a single geographic area. This can be driven by ecological niches or behavioral changes that reduce interbreeding among individuals.

Parapatric speciation involves neighboring populations that are partially isolated, where gene flow is limited but still occurs. This gradual reduction in gene flow can eventually lead to the emergence of new species. Peripatric speciation is similar to allopatric speciation but involves a smaller, isolated population that undergoes rapid genetic change due to its limited size.

Understanding speciation is crucial for comprehending the diversity of life on Earth. It explains how populations adapt to different environments, resulting in the rich variety of species observed today. Studying speciation not only sheds light on the evolutionary process but also informs conservation efforts by highlighting the importance of genetic diversity and habitat preservation.

Speciation Online Quiz

By presenting 3 options to choose from, Speciation 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 Speciation Questions and Answers and click over the correct answer.

Test Name: Speciation 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.

Speciation

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1 / 40

Mechanical isolation is a type of _____.

Allopatric speciation

Prezygotic barrier

Postzygotic barrier

2 / 40

Which of the following is NOT a mechanism of reproductive isolation?

Gametic isolation

Behavioral isolation

Mutation

3 / 40

Hybrid zones are regions where _____.

Only one species exists

No species exist

Two different species' ranges overlap and interbreeding occurs

4 / 40

The process of speciation where new species arise due to hybridization between two parent species is called _____.

Allopatric speciation

Hybrid speciation

Sympatric speciation

5 / 40

Geographic isolation can lead to _____.

Allopatric speciation

Sympatric speciation

Polyploidy

6 / 40

Behavioral isolation occurs when _____.

Physical barriers separate populations

Two species interbreed

Different mating behaviors prevent reproduction

7 / 40

Gametic isolation is a form of _____.

Postzygotic barrier

Prezygotic barrier

Sympatric speciation

8 / 40

The process of speciation where new species arise due to ecological differences within the same geographic area is known as _____.

Allopatric speciation

Ecological speciation

Adaptive radiation

9 / 40

The biological species concept defines a species as a group of individuals that _____.

Can interbreed and produce fertile offspring

Share similar physical traits

Live in the same habitat

10 / 40

The presence of a physical barrier that separates populations is an example of _____.

Polyploidy

Sympatric speciation

Allopatric speciation

11 / 40

Adaptive radiation is a form of _____.

Sympatric speciation

Punctuated equilibrium

Allopatric speciation

12 / 40

The fusion of two species back into one is called _____.

Speciation reversal

Fusion

Hybridization

13 / 40

Allopatric speciation occurs when _____.

Hybridization occurs

Populations inhabit the same area

Populations are geographically separated

14 / 40

Which of the following is an example of allopatric speciation?

Behavioral isolation in insects

Geographic isolation in birds

Polyploidy in plants

15 / 40

The process of two species evolving in response to each other, often resulting in coevolution, is called _____.

Reproductive isolation

Coevolution

Adaptive radiation

16 / 40

The presence of a physical barrier that separates populations is an example of _____.

Polyploidy

Sympatric speciation

Allopatric speciation

17 / 40

Prezygotic barriers prevent _____.

Formation of gametes

Development of hybrids

Fertilization

18 / 40

Reproductive isolation prevents _____.

Natural selection

Mutation

Gene flow

19 / 40

Which of the following is an example of postzygotic isolation?

Behavioral isolation

Hybrid sterility

Habitat isolation

20 / 40

The process of speciation that occurs rapidly in response to a drastic change in the environment is called _____.

Gradualism

Adaptive radiation

Punctuated equilibrium

21 / 40

Reproductive isolation between two species is typically _____.

Stronger in sympatry

Stronger in allopatry

Independent of geographic factors

22 / 40

Postzygotic barriers prevent _____.

Hybrid survival

Fertilization

Mating between species

23 / 40

The study of how species are formed and evolve is called _____.

Evolution

Taxonomy

Speciation

24 / 40

The process by which closely related species evolve different traits in response to different selective pressures is called _____.

Coevolution

Convergent evolution

Divergent evolution

25 / 40

The process by which populations become reproductively isolated and evolve into distinct species while still living in the same area is called _____.

Hybridization

Sympatric speciation

Allopatric speciation

26 / 40

The process of speciation that occurs rapidly in response to a drastic change in the environment is called _____.

Gradualism

Punctuated equilibrium

Adaptive radiation

27 / 40

Which of the following is a prezygotic barrier to reproduction?

Hybrid infertility

Behavioral isolation

Habitat isolation

28 / 40

Which of the following statements about hybrid zones is true?

They can be stable or dynamic

They always lead to speciation

They are regions where no hybrids occur

29 / 40

Speciation that occurs without physical separation is known as _____.

Sympatric speciation

Allopatric speciation

Polyploidy

30 / 40

The process of speciation where new species arise due to geographic isolation is called _____.

Sympatric speciation

Adaptive radiation

Allopatric speciation

31 / 40

In allopatric speciation, reproductive isolation occurs _____.

After geographic separation

Before geographic separation

Without geographic separation

32 / 40

Sympatric speciation occurs when _____.

Populations are geographically separated

Gene flow is restricted

Populations inhabit the same area

33 / 40

The process by which new species form in response to changes in ecological niches is known as _____.

Sympatric speciation

Allopatric speciation

Ecological speciation

34 / 40

The Dobzhansky-Muller model explains speciation through the accumulation of _____.

Incompatible alleles

Reproductive barriers

Homologous chromosomes

35 / 40

Reinforcement occurs when _____.

Reproductive barriers weaken over time

Hybrid fitness decreases and reproductive barriers strengthen

Hybrid fitness increases and reproductive barriers weaken

36 / 40

Speciation is the process by which new _____.

Genes

Species

Traits

37 / 40

The founder effect can contribute to speciation by _____.

Reducing genetic variation

Increasing gene flow

Promoting hybridization

38 / 40

Which of the following is an example of sympatric speciation?

Polyploidy in plants

Founder effect in mammals

Geographic isolation in birds

39 / 40

The "Snowball Earth" hypothesis suggests that _____.

Speciation is driven by geographic isolation

Speciation rates are constant over time

Global cooling events led to rapid speciation

40 / 40

Polyploidy can lead to speciation through _____.

Gradual allopatric speciation

Instantaneous sympatric speciation

Behavioral isolation

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adminApril 6, 2024

0 34 2 minutes read