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

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

Convergent evolution

Divergent evolution

Coevolution

2 / 40

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

Incompatible alleles

Homologous chromosomes

Reproductive barriers

3 / 40

Prezygotic barriers prevent _____.

Formation of gametes

Fertilization

Development of hybrids

4 / 40

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

Adaptive radiation

Punctuated equilibrium

Gradualism

5 / 40

Which of the following statements about hybrid zones is true?

They always lead to speciation

They can be stable or dynamic

They are regions where no hybrids occur

6 / 40

Speciation is the process by which new _____.

Genes

Traits

Species

7 / 40

Reproductive isolation between two species is typically _____.

Stronger in allopatry

Stronger in sympatry

Independent of geographic factors

8 / 40

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

Speciation

Taxonomy

Evolution

9 / 40

Hybrid zones are regions where _____.

Two different species' ranges overlap and interbreeding occurs

Only one species exists

No species exist

10 / 40

Polyploidy can lead to speciation through _____.

Instantaneous sympatric speciation

Behavioral isolation

Gradual allopatric speciation

11 / 40

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

Reproductive isolation

Adaptive radiation

Coevolution

12 / 40

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

Live in the same habitat

Can interbreed and produce fertile offspring

Share similar physical traits

13 / 40

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

Allopatric speciation

Hybrid speciation

Sympatric speciation

14 / 40

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

Polyploidy

Allopatric speciation

Sympatric speciation

15 / 40

Adaptive radiation is a form of _____.

Allopatric speciation

Sympatric speciation

Punctuated equilibrium

16 / 40

Postzygotic barriers prevent _____.

Mating between species

Fertilization

Hybrid survival

17 / 40

Which of the following is a prezygotic barrier to reproduction?

Behavioral isolation

Habitat isolation

Hybrid infertility

18 / 40

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

Gametic isolation

Behavioral isolation

Mutation

19 / 40

Speciation that occurs without physical separation is known as _____.

Sympatric speciation

Allopatric speciation

Polyploidy

20 / 40

Reproductive isolation prevents _____.

Natural selection

Gene flow

Mutation

21 / 40

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

Punctuated equilibrium

Gradualism

Adaptive radiation

22 / 40

The founder effect can contribute to speciation by _____.

Increasing gene flow

Promoting hybridization

Reducing genetic variation

23 / 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

24 / 40

Allopatric speciation occurs when _____.

Hybridization occurs

Populations inhabit the same area

Populations are geographically separated

25 / 40

Which of the following is an example of postzygotic isolation?

Habitat isolation

Behavioral isolation

Hybrid sterility

26 / 40

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

Sympatric speciation

Ecological speciation

Allopatric speciation

27 / 40

In allopatric speciation, reproductive isolation occurs _____.

Before geographic separation

After geographic separation

Without geographic separation

28 / 40

Mechanical isolation is a type of _____.

Postzygotic barrier

Allopatric speciation

Prezygotic barrier

29 / 40

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

Sympatric speciation

Allopatric speciation

Adaptive radiation

30 / 40

Behavioral isolation occurs when _____.

Physical barriers separate populations

Two species interbreed

Different mating behaviors prevent reproduction

31 / 40

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

Fusion

Hybridization

Speciation reversal

32 / 40

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

Polyploidy

Sympatric speciation

Allopatric speciation

33 / 40

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

Allopatric speciation

Sympatric speciation

Hybridization

34 / 40

Sympatric speciation occurs when _____.

Gene flow is restricted

Populations inhabit the same area

Populations are geographically separated

35 / 40

Geographic isolation can lead to _____.

Polyploidy

Allopatric speciation

Sympatric speciation

36 / 40

Gametic isolation is a form of _____.

Prezygotic barrier

Sympatric speciation

Postzygotic barrier

37 / 40

Reinforcement occurs when _____.

Hybrid fitness increases and reproductive barriers weaken

Reproductive barriers weaken over time

Hybrid fitness decreases and reproductive barriers strengthen

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

Which of the following is an example of allopatric speciation?

Behavioral isolation in insects

Geographic isolation in birds

Polyploidy in plants

40 / 40

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

Adaptive radiation

Allopatric speciation

Ecological speciation

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adminApril 6, 2024

0 34 2 minutes read