Speciation MCQs with Answers

adminApril 6, 2024

0 30 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

Hybrid zones are regions where _____.

Two different species' ranges overlap and interbreeding occurs

Only one species exists

No species exist

2 / 40

Geographic isolation can lead to _____.

Polyploidy

Allopatric speciation

Sympatric speciation

3 / 40

Behavioral isolation occurs when _____.

Two species interbreed

Different mating behaviors prevent reproduction

Physical barriers separate populations

4 / 40

Mechanical isolation is a type of _____.

Prezygotic barrier

Allopatric speciation

Postzygotic barrier

5 / 40

Speciation is the process by which new _____.

Traits

Genes

Species

6 / 40

Which of the following is an example of allopatric speciation?

Polyploidy in plants

Behavioral isolation in insects

Geographic isolation in birds

7 / 40

Reproductive isolation between two species is typically _____.

Stronger in sympatry

Independent of geographic factors

Stronger in allopatry

8 / 40

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

Hybridization

Fusion

Speciation reversal

9 / 40

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

Adaptive radiation

Punctuated equilibrium

Gradualism

10 / 40

Postzygotic barriers prevent _____.

Fertilization

Mating between species

Hybrid survival

11 / 40

In allopatric speciation, reproductive isolation occurs _____.

Without geographic separation

Before geographic separation

After geographic separation

12 / 40

Allopatric speciation occurs when _____.

Populations inhabit the same area

Populations are geographically separated

Hybridization occurs

13 / 40

Speciation that occurs without physical separation is known as _____.

Allopatric speciation

Polyploidy

Sympatric speciation

14 / 40

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

Adaptive radiation

Ecological speciation

Allopatric speciation

15 / 40

Reinforcement occurs when _____.

Hybrid fitness decreases and reproductive barriers strengthen

Reproductive barriers weaken over time

Hybrid fitness increases and reproductive barriers weaken

16 / 40

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

Evolution

Taxonomy

Speciation

17 / 40

Reproductive isolation prevents _____.

Natural selection

Mutation

Gene flow

18 / 40

Polyploidy can lead to speciation through _____.

Behavioral isolation

Gradual allopatric speciation

Instantaneous sympatric speciation

19 / 40

Which of the following is an example of sympatric speciation?

Geographic isolation in birds

Polyploidy in plants

Founder effect in mammals

20 / 40

Gametic isolation is a form of _____.

Sympatric speciation

Prezygotic barrier

Postzygotic barrier

21 / 40

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

Share similar physical traits

Live in the same habitat

Can interbreed and produce fertile offspring

22 / 40

Which of the following statements about hybrid zones is true?

They always lead to speciation

They are regions where no hybrids occur

They can be stable or dynamic

23 / 40

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

Sympatric speciation

Hybridization

Allopatric speciation

24 / 40

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

Gradualism

Adaptive radiation

Punctuated equilibrium

25 / 40

Which of the following is an example of postzygotic isolation?

Hybrid sterility

Habitat isolation

Behavioral isolation

26 / 40

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

Sympatric speciation

Allopatric speciation

Polyploidy

27 / 40

The "Snowball Earth" hypothesis suggests that _____.

Global cooling events led to rapid speciation

Speciation is driven by geographic isolation

Speciation rates are constant over time

28 / 40

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

Allopatric speciation

Sympatric speciation

Hybrid speciation

29 / 40

Sympatric speciation occurs when _____.

Populations are geographically separated

Populations inhabit the same area

Gene flow is restricted

30 / 40

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

Sympatric speciation

Allopatric speciation

Adaptive radiation

31 / 40

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

Reproductive barriers

Homologous chromosomes

Incompatible alleles

32 / 40

Which of the following is a prezygotic barrier to reproduction?

Behavioral isolation

Habitat isolation

Hybrid infertility

33 / 40

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

Ecological speciation

Allopatric speciation

Sympatric speciation

34 / 40

Adaptive radiation is a form of _____.

Punctuated equilibrium

Allopatric speciation

Sympatric speciation

35 / 40

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

Divergent evolution

Coevolution

Convergent evolution

36 / 40

The founder effect can contribute to speciation by _____.

Reducing genetic variation

Increasing gene flow

Promoting hybridization

37 / 40

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

Adaptive radiation

Reproductive isolation

Coevolution

38 / 40

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

Polyploidy

Sympatric speciation

Allopatric speciation

39 / 40

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

Gametic isolation

Behavioral isolation

Mutation

40 / 40

Prezygotic barriers prevent _____.

Fertilization

Formation of gametes

Development of hybrids

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adminApril 6, 2024

0 30 2 minutes read