Evolution Test

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Evolution Test - 18

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Weekly Quiz Competition

Question 1
1 / -0

During origin of life, nucleoprotein gave most probably the first sign of

A
Life

B
Amino Acids

C
Soil

D
Sugar

Solution

How life actually originated we do not know but we do know that it started with accumulation of biomolecules produced in reducing atmosphere. The biomolecules later on gave rise to aggregates of biomolecules. First nucleoproteins were most probably produced on clay surfaces. That was the important first sign of life because it meant a transition from an aggregate of biomolecule to a self replicating entity, an important characteristic of living organisms.
Question 2
1 / -0

Under certain conditions scientists have obtained cell-like structures. These are known as

A
Microbes

B
Protists

C
Coacervates

D
Prebiotic soup

Solution

Oparin predicted that cells originated from cell like aggregates of biomolecules formed in hot dilute soup in primitive earth. These early aggregates were called Coacervates.
Question 3
1 / -0

Abiogenesis means

A
Origin of life from non-living substances

B
Origin of life from living organisms

C
Origin of Viruses and microbes

D
None of the above

Solution

How life originated we do not know. In the present earth life comes from pre-existing life but in primitive earth theory of abiogenesis says that life originated from nonliving entities. Prefix 'A' means non, Bio refers to life and genesis means synthesis or production i.e., synthesis or production of life from something nonliving.
So, the correct answer is 'Origin of life from non-living substances'.
Question 4
1 / -0

Coacervates are

A
Protobionts having polysaccharide + protein + $$H_2O$$

B
Protein Aggregate

C
Protein and lipid aggregates

D
None of the above

Solution

Protobionts are prebiotic chemical aggregates having one or more properties of living systems. Process of aggregation of organic molecules is called coacervation. It produced three types of protobionts - coacervates, microspheres and vesicles. Coacervates are reversible emulsoid aggregates consisting of protein and polysaccharide with some water.
Question 5
1 / -0

_________ is an example for adaptive radiation.

A
Darwins finches

B
Australian marsupial

C
Both (a) and (b)

D
Kangaroo
Question 6
1 / -0

The most vital process for the existence of life on earth is

A
Communication in animals

B
Photosynthesis by plants

C
Reproduction in plants and animals

D
Respiration in animals

Solution

In present day earth, most important process for existence of life on earth is photosynthesis. It is the only process, which releases oxygen from water and produces food on which all the animals directly or indirectly are dependent. Further aerobic respiration is the most important respiratory pathway for survival of most of the organisms.
Question 7
1 / -0

Theory of special creation was given by

A
Weisman

B
Helmon

C
Manpertuis

D
Father Saurez

Solution

Father Suarez was a strong believer (supporter) of the theory of special creation. He believed that whole life on earth was formed in 6 days.
Question 8
1 / -0

The jurassic period belongs to the era

A
Coenozoic

B
Paleozoic

C
Mesozoic

D
Protozoic
Question 9
1 / -0

The abiogenesis occurred about how many billion years ago

A
1.2 billion

B
1.5 billion

C
2.5 billion

D
3.5 billion

Solution

Abiogenesis or spontaneous creation or autobiogenesis was proposed by von Helmont (1577-1644). He stated that life originated abiogenetically from non living materials by spontaneous generation about 3.5 billion years ago.
Question 10
1 / -0

According to one of the most accepted theory, the Earth atmosphere before any life had originated consisted of $$H_2O$$, $$H_2$$, $$NH_2$$ and

A
$$CH_4$$

B
$$O_2$$

C
$$N_2$$

D
None of the above

Solution

Earth's atmosphere before any life had originated consisted of H$$_2$$O, H$$_2$$, NH$$_2$$ and CH$$_4$$
So, the correct answer is 'CH$$_4$$

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Re-Attempt Weekly Quiz Competition

Evolution Test - 18

Result

Evolution Test - 18

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SHARING IS CARING

Question 1

Life

Amino Acids

Soil

Sugar

Solution

Question 2

Microbes

Protists

Coacervates

Prebiotic soup

Solution

Question 3

Origin of life from non-living substances

Origin of life from living organisms

Origin of Viruses and microbes

None of the above

Solution

Question 4

Protobionts having polysaccharide + protein + $$H_2O$$

Protein Aggregate

Protein and lipid aggregates

None of the above

Solution

Question 5

Darwins finches

Australian marsupial

Both (a) and (b)

Kangaroo

Question 6

Communication in animals

Photosynthesis by plants

Reproduction in plants and animals

Respiration in animals

Solution

Question 7

Weisman

Helmon

Manpertuis

Father Saurez

Solution

Question 8

Coenozoic

Paleozoic

Mesozoic

Protozoic

Question 9

1.2 billion

1.5 billion

2.5 billion

3.5 billion

Solution

Question 10

$$CH_4$$

$$O_2$$

$$N_2$$

None of the above

Solution

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