Evolution Test

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Evolution Test - 66

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Weekly Quiz Competition

Question 1
1 / -0

Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter?

A
Larvae could appear in decaying organic matter

B
Microbes can appear on bread kept at a moist place

C
Microbes appear on unsterilised organic matter

D
Meat was not spoiled, when heated and kept sealed in a vessel.

Solution

Francesco Redi, an Italian physician, took the flesh and cooked it so that no organisms were left alive. Then he placed flesh in three jars, of which, one was uncovered, the second was covered with parchment and the third one was covered with fine muslin. He kept these jar for a few days and observed that maggots developed only in the uncovered jar through the flies also visited other jars.

So, the correct answer is 'Meat was not spoiled, when heated and kept sealed in a vessel'.
Question 2
1 / -0

Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution?
(i) Lower groups of organisms have simpler body design.
(ii) Asexual reproduction is common in lower groups.
(iii) Asexual reproduction is common in higher groups of organisms.
(iv) The high incidence of sexual reproduction in angiosperms and vertebrates.

A
(i), (ii) and (iii)

B
(i), (iii) and (iv)

C
(i), (ii) and (iv)

D
(ii), (iii) and (iv)

Solution

The statements given in the question that support the view that elaborate sexual reproductive process appeared much later in the organic evolution are:

(i) Lower groups of organisms have simpler body design.

(ii) Asexual reproduction is common in lower groups.

(iv) The high incidence of sexual reproduction in angiosperms and vertebrates.
So, the correct answer is '(i), (ii) and (iv)'.
Question 3
1 / -0

According to one of the most widely accepted theories, earth's atmosphere before origin of life was

A
Oxidising

B
Oxidising along with $$H_{2}$$

C
Reducing with free $$O_{2}$$ in small amount

D
Reducing with oxygen absent in $$O_{2}$$ form

Solution

The atmosphere of earth before origin of life was strongly reducing (without free oxygen). At high temperature, free atoms combined to form molecules and simple inorganic compounds. Hydrogen, oxygen, carbon and nitrogen could not exist in free state and thus combined variously either among themselves or like $$CH_{4}, NH_{3}, H_{2}$$ and $$H_{2}O$$ vapour.
So, the correct answer is 'Reducing with oxygen absent in O$$_2$$ form'.
Question 4
1 / -0

Abiogenesis theory of origin supports

A
Spontaneous generation

B
Origin of life from blue-green algae

C
Origin of life is due to pre-existing organisms

D
Organic evolution is due to chemical reactions

Solution

Abiogenesis theory of origin states that life originated from non-living things in a spontaneous manner. This theory was supported by early Greek philosophers. In ancient Egypt, it was believed that the mud of the Nile river could give rise to frogs, snakes, mice and even crocodiles when warmed by the sun. Van Helmont believed that human sweat and wheat grains could given rise to organisms.
So, the correct answer is 'Spontaneous generation'.
Question 5
1 / -0

Who proposed that the first form of life could have come from pre-existing non-living organic molecules?

A
S.L. Miller

B
Oparin and Haldane

C
Charles Darwin

D
Alfred Wallace
Solution
According to Oparin-Haldane theory, life originated through bio-chemical processes of atoms that combined to form molecules.
Molecules in turn reacted to produce inorganic and organic compounds.
Organic compounds interacted to produce all types of macromolecules which organized to form the first form of life or cells.
So, the correct answer is 'Oparin and Haldane'.
Question 6
1 / -0

The following are some major events in the early history of life:
P. First heterotrophic prokaryotes
Q. First genes
R. First eukaryotes
S. First autotrophic prokaryotes
T. First animals
Which option below places these events in the correct order?

A
$$P\rightarrow Q\rightarrow S\rightarrow R\rightarrow T$$

B
$$Q\rightarrow S\rightarrow R\rightarrow P\rightarrow T$$

C
$$Q\rightarrow P\rightarrow S\rightarrow R\rightarrow T$$

D
$$Q\rightarrow S\rightarrow P\rightarrow R\rightarrow T$$

Solution

Organisms have evolved from simpler forms to complex form. Hence the order of the events are genes first, then autotrophic prokaryotes, then heterotrophic prokaryotes, then eukaryotes and then animals.
So, the correct option is 'Q$$\rightarrow$$ S $$\rightarrow$$ R $$\rightarrow$$ P $$\rightarrow$$ T'
Question 7
1 / -0

Each of us is part of the ongoing evolution of the species. Which of the following occurences would have the greatest impact on the future biological evolution of the human population?

A
A mutation occurs in one of your sperm or egg cells

B
You do exercise every day so that you stay physically fit and healthy

C
You move to Kerala, the state of highest medical facilities and literacy

D
You encourage your children to develop their intellectual abilities

Solution

A mutation in sperms or egg cells means a mutation in offspring. This will have the greatest impact on the future biological evolution of the human population.
So, the correct option is A.
Question 8
1 / -0

Match column I with column II and select the correct option from the given codes.
Column I Column II
A. Wallace (i) Essay on population
B. Malthus (ii) Biston
C. Hardy-Weinberg law (iii) $$p^{2} + q^{2} + 2pq = 1$$
D. Industrial melanism (iv) Co-proposer of natural selection

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
$$A - (iv), B - (i), C - (iii), D - (ii)$$

Solution

Wallace was the co-proposer of the theory of natural selection.
p$${2}$$ +q$${2}$$ +2pq=1 is the mathematical expression of Hardy-Weinberg law.
Industrial melamism was observed ina specifie genera of moths named Biston betularia.
Malthus proposed the theory of population.
So, the correct answer is 'A-(iv), B-(I), C-(iii), D-(ii)'
Question 9
1 / -0

Refer to the given figure. What does it represent?

A
Convergent evolution

B
Adaptive radiation

C
Divergent evolution

D
Both (b) and (c)
Solution
- The given figure represents the adaptive radiation of Australian marsupial into placental mammals, which is defined as the process in which the organism undergo diversification to produce multiple new forms mainly when the change in the environment occurs.
- This also occurs in case of divergent evolution since it leads to the formation of new forms of organisms from a similar ancestor.
So, the correct option is 'Both (b) and (c)'.
Question 10
1 / -0

According to Oparin, which one of the following was not present in the primitive atmosphere of the earth?

A
Methane

B
Oxygen

C
Hydrogen

D
Water vapour

Solution

According to Oparin, the primitive atmosphere of the earth consisted of numerous hydrogen atoms that combined with all oxygen atoms to form water and leaving no free oxygen. Thus, primitive atmosphere was reducing one, without any free oxygen available.
So, the correct answer is 'Oxygen'.

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Re-Attempt Weekly Quiz Competition

Column I	Column II
A. Wallace	(i) Essay on population
B. Malthus	(ii) Biston
C. Hardy-Weinberg law	(iii) $$p^{2} + q^{2} + 2pq = 1$$
D. Industrial melanism	(iv) Co-proposer of natural selection

Evolution Test - 66

Result

Evolution Test - 66

Score

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Rank

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SHARING IS CARING

Question 1

Larvae could appear in decaying organic matter

Microbes can appear on bread kept at a moist place

Microbes appear on unsterilised organic matter

Meat was not spoiled, when heated and kept sealed in a vessel.

Solution

Question 2

(i), (ii) and (iii)

(i), (iii) and (iv)

(i), (ii) and (iv)

(ii), (iii) and (iv)

Solution

Question 3

Oxidising

Oxidising along with $$H_{2}$$

Reducing with free $$O_{2}$$ in small amount

Reducing with oxygen absent in $$O_{2}$$ form

Solution

Question 4

Spontaneous generation

Origin of life from blue-green algae

Origin of life is due to pre-existing organisms

Organic evolution is due to chemical reactions

Solution

Question 5

S.L. Miller

Oparin and Haldane

Charles Darwin

Alfred Wallace

Solution

Question 6

$$P\rightarrow Q\rightarrow S\rightarrow R\rightarrow T$$

$$Q\rightarrow S\rightarrow R\rightarrow P\rightarrow T$$

$$Q\rightarrow P\rightarrow S\rightarrow R\rightarrow T$$

$$Q\rightarrow S\rightarrow P\rightarrow R\rightarrow T$$

Solution

Question 7

A mutation occurs in one of your sperm or egg cells

You do exercise every day so that you stay physically fit and healthy

You move to Kerala, the state of highest medical facilities and literacy

You encourage your children to develop their intellectual abilities

Solution

Question 8

$$A - (iii), B - (iv), C - (ii), D - (i)$$

$$A - (ii), B - (i), C - (iv), D - (iii)$$

$$A - (iv), B - (i), C - (ii), D - (iii)$$

$$A - (iv), B - (i), C - (iii), D - (ii)$$

Solution

Question 9

Convergent evolution

Adaptive radiation

Divergent evolution

Both (b) and (c)

Solution

Question 10

Methane

Oxygen

Hydrogen

Water vapour

Solution

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