Evolution Test

Question 1
4 / -1

Following is the diagrammatic representation of the operation of natural selection on different traits. Which among the following options correctly identifies all the three graphs A, B and C.

A
a

B
b

C
c

D
d

Question 2
4 / -1

Select the pair which does not match.

A
Coacervates - Aggregates of organic compounds separated by an organic membrane

B
Lamarck - Species are not immutable

C
Allopatric - Separated by space

D
Darwin's finches - Unique to Galapagos

Question 3
4 / -1

Replacement of the lighter-coloured variety of peppered moth (Biston betularia) to its darker variety (Biston carbonaria) in England is the example of

A
natural selection

B
regeneration

C
genetic isolation

D
temporal isolation

Question 4
4 / -1

The Hardy-Weinberg principle cannot operate if

A
The population is very large

B
Frequent mutations occur in population

C
The Population has no chance of interaction with other populations

D
Free interbreeding occurs among all members of the population

Question 5
4 / -1

Read the following statements and choose the correct option.
(i) Increase in melanised moths after industrialisation in Great Britain is a proof for Natural Selection
(ii) When more individuals of a population acquire a mean character value, it is called disruption
(iii) Changes in allelic frequency in a population will lead to Hardy-Weinberg equilibrium
(iv) Genetic drift changes the existing gene or allelic frequency in future generations

A
(ii) alone is correct

B
(iv) alone is correct

C
both (i) and (iv) are eorrect

D
both (i) and (iii) are correct

Question 6
4 / -1

An isolated population of humans with approximately equal numbers of blue-eyed and brown-eyed individuals was decimated by an earthquake. Only a few brown-eyed people remained to form the next generation. This kind of change in the gene pool is called a

A
Hardy-Weinberg equilibrium

B
blocked gene flow

C
bottleneck effect

D
founder effect

Question 7
4 / -1

Fill up the blanks in the following paragraph by selecting the correct option
When migration of a section of population to another place and population occurs, (i) change in the original as well as in the new population. New genes/alleles are added to the (ii) population and these are lost from the (iii) population. There would be a (iv) if this gene migration, happens multiple times. If the same change occurs by chance, it is called (v). Sometimes the change in allele frequency is so different in the new sample of population that they become a different species. The original drifted population becomes founders and the effect is called (vi).

A
a

B
b

C
c

D
d

Question 8
4 / -1

Genetic drift operates in :-

A
large isolated populations

B
mendelian populations

C
island populations

D
smaller populations

Question 9
4 / -1

Which of the following is most important for speciation?

A
Seasonal isolation

B
Reproductive isolation

C
Behavioural isolation

D
Tropical isolation

Question 10
4 / -1

At a particular locus, frequency of allele A is 0.6 and that of allele a is 0.4. What would be the frequency of heterozygotes in a random mating population at equilibrium?

A
0.36

B
0.16

C
0.24

D
0.48

Question 11
4 / -1

Industrial melanism as oberved in peppered moth proves that

A
The melanic form of the moth has no selective advantage over lighter form in industrial area

B
The lighter-form the moth has no selective advantage either in polluted industrial area or non-polluted area

C
Melanism is a pollution-generated feature

D
The true black melanic froms escaped unoticed so they managed to survive resulting in more population of black moths.

Question 12
4 / -1

Match column I with column II and select the correct option from the given codes.

A
A−(iii),B−(iv),C−(ii),D−(i)

B
A−(ii),B−(i),C−(iv),D−(iii)

C
A−(iv),B−(i),C−(ii),D−(iii)

D
A−(iv),B−(i),C−(iii),D−(ii)

Question 13
4 / -1

An inter-breeding population of finches became separated geographically, forming two isolated groups. Each group then became subject to different selective pressures. One group was then introduced into the habitat of the other. Which one of the following would determine whether they now formed two distinct species?

A
They had been separated for more than three million years

B
They failed to produce fertile F₁ hybrids

C
They showed marked differences in the shape of their beaks

D
Their plumage had become markedly different

Question 14
4 / -1

The factors involved in the formation of new species are

A
isolation and competition

B
gene flow and competition

C
competition and mutation

D
isolation and variation

Question 15
4 / -1

The different forms of interbreeding species that live in different geographical regions are called

A
sibling species

B
sympatric species

C
allopatric species

D
polypic species.

Submit Test

Evolution Test ...

Question 1

a

b

c

d

Question 2

Coacervates - Aggregates of organic compounds separated by an organic membrane

Lamarck - Species are not immutable

Allopatric - Separated by space

Darwin's finches - Unique to Galapagos

Question 3

natural selection

regeneration

genetic isolation

temporal isolation

Question 4

The population is very large

Frequent mutations occur in population

The Population has no chance of interaction with other populations

Free interbreeding occurs among all members of the population

Question 5

(ii) alone is correct

(iv) alone is correct

both (i) and (iv) are eorrect

both (i) and (iii) are correct

Question 6

Hardy-Weinberg equilibrium

blocked gene flow

bottleneck effect

founder effect

Question 7

a

b

c

d

Question 8

large isolated populations

mendelian populations

island populations

smaller populations

Question 9

Seasonal isolation

Reproductive isolation

Behavioural isolation

Tropical isolation

Question 10

0.36

0.16

0.24

0.48

Question 11

The melanic form of the moth has no selective advantage over lighter form in industrial area

The lighter-form the moth has no selective advantage either in polluted industrial area or non-polluted area

Melanism is a pollution-generated feature

The true black melanic froms escaped unoticed so they managed to survive resulting in more population of black moths.

Question 12

A−(iii),B−(iv),C−(ii),D−(i)

A−(ii),B−(i),C−(iv),D−(iii)

A−(iv),B−(i),C−(ii),D−(iii)

A−(iv),B−(i),C−(iii),D−(ii)

Question 13

They had been separated for more than three million years

They failed to produce fertile F1 hybrids

They showed marked differences in the shape of their beaks

Their plumage had become markedly different

Question 14

isolation and competition

gene flow and competition

competition and mutation

isolation and variation

Question 15

sibling species

sympatric species

allopatric species

polypic species.

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They failed to produce fertile F₁ hybrids