Heredity and Evolution Test

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Heredity and Evolution Test - 30

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Question 1
1 / -0

The human species have genetic roots in

A
India

B
America

C
Africa

D
Australia
Solution
- The fossils are studied to determine the location and the origin of the organism.
- The fossils of the ancient human species Homo naledi were excavated in the southern regions of Africa.
- With the help of research, the genetic footprint of humans can be traced back to Africa.
Thus, the correct answer is option C.
Question 2
1 / -0

Which of the following contrasting characters were studied by Mendel in garden pea?

A
Height

B
Seed colour

C
Shape of the seed

D
All of the above

Solution

Mendel chose pea (Pisum sativum) plant to demonstrate the inheritance of characters because pea plant has contrasting and distinguishing characters (phenotypes) and genotypes. The contrasting characters studied by him was pea shape (round or wrinkled), pea color (green or yellow), pod shape (constricted or inflated), pod color (green or yellow), flower color (purple or white), size (tall or dwarf) and position of flowers (axial or terminal).
Thus, the correct answer is option D.
Question 3
1 / -0

The book "Origin of species" was written by ___________.

A
Darwin

B
Beagle

C
Mendel

D
Sutton

Solution

The book "On the Origin of Species" published on 24 November 1859 is a work of scientific literature by Charles Darwin. It is considered to be the foundation of evolutionary biology.
So, the correct answer is option A.
Question 4
1 / -0

A recessive trait in garden pea is:

A
Wrinkled seeds

B
Tall stem

C
Round seeds

D
Coloured seed coat
Solution
In garden pea, the traits for the given characters are as follows-
- Wrinkled seeds – a recessive trait
- Tall stem – a dominant trait
- Round seeds – a dominant trait
- Coloured seed coat – a dominant trait
So, the correct answer is option A.
Question 5
1 / -0

By the statement 'survival of the fittest', Darwin meant that:

A
The strongest of all species will survive.

B
The most intelligent of the species will survive.

C
The cleverest of the species will survive.

D
The most adaptable of the species that are reproductively fit will survive.
Solution
- The phrase 'survival of the fittest' was used by Darwin to explain the process of natural selection.
- According to him the organisms which can adapt to the environmental condition to the maximum level and are able to reproduce (can pass on their characteristics to the next generation) are selected by nature for survival.
- The others are rejected and they perish.
- Thus, the organisms that are the fittest (reproductively) are selected.
- So, the correct answer is option D.
Question 6
1 / -0

Which was absent/ least abundant in the atmosphere at the time of origin of life ?

A
$$NH_3$$

B
$$H_2$$

C
$$O_2$$

D
$$CH_4$$

Solution

Ammonia, methane and hydrogen sulfide were present in the earth's atmosphere, but no oxygen.
The correct option is C.
Question 7
1 / -0

Which of the following statement can be related to Mendel's experiments?

A
Habits are inherited

B
Characters are inherited

C
Characters cannot be inherited

D
None of the above

Solution

The process by which the characters are transferred from one generation to the other is known as inheritance. Mendel gave law of inheritance on the basis of his experiments on pea plant. According to him, characters are inherited as distinct units. Two copies of the genetic material that determines characters are inherited over generations in which one copy comes from each the male and female parent.
Thus, the correct answer is option B.
Question 8
1 / -0

Mendel chose pea plant to demonstrate the inheritance of characters because

A
They are leguminous plant

B
They have contrasting characters

C
They have seeds

D
None of the above

Solution

Mendel chose pea (Pisum sativum) plant to demonstrate the inheritance of characters because pea plant has contrasting and distinguishing characters (phenotypes) and genotypes. Also, it is easy to raise and has many offspring per mating.
Thus, the correct answer is option B.
Question 9
1 / -0

Mendel selected Pea as material for his experiments because

A
It is an annual plant with comparatively short life cycle

B
The flowers are self-pollinated

C
The number of seeds produced is quite large

D
All the above

Solution

Correct Answer: D
Explanation:
• Because of his genetic experiments with the pea, Mendel is known as the father of modern genetics.
• The pea plant a well-defined annual plant with distinct characteristics.
• It has bisexual flowers that contain both female and male parts, making it easy to self-fertilize.
• It lives for a short time and has a large number of offspring.
Hence, Mendel selected the pea plant for all of the reasons given above.
Question 10
1 / -0

Atmosphere of earth just before the origin of life consisted of ________________.

A
Water vapours, $$CH_4 , NH_3 $$ and Oxygen

B
$$ CH_4 , NH_3 $$ and $$H_2$$S

C
$$ CO_2 , NH_3 , H_2 $$ and water vapours

D
$$ CH_4 , O_3 , O_2 $$ and water vapours

Solution

The atmosphere of the earth just before the origin of life consisted of methane, ammonia, hydrogen sulfide, but no oxygen.
Thus, the correct answer is option B.

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Heredity and Evolution Test - 30

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Heredity and Evolution Test - 30

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SHARING IS CARING

Question 1

India

America

Africa

Australia

Solution

Question 2

Height

Seed colour

Shape of the seed

All of the above

Solution

Question 3

Darwin

Beagle

Mendel

Sutton

Solution

Question 4

Wrinkled seeds

Tall stem

Round seeds

Coloured seed coat

Solution

Question 5

The strongest of all species will survive.

The most intelligent of the species will survive.

The cleverest of the species will survive.

The most adaptable of the species that are reproductively fit will survive.

Solution

Question 6

$$NH_3$$

$$H_2$$

$$O_2$$

$$CH_4$$

Solution

Question 7

Habits are inherited

Characters are inherited

Characters cannot be inherited

None of the above

Solution

Question 8

They are leguminous plant

They have contrasting characters

They have seeds

None of the above

Solution

Question 9

It is an annual plant with comparatively short life cycle

The flowers are self-pollinated

The number of seeds produced is quite large

All the above

Solution

Question 10

Water vapours, $$CH_4 , NH_3 $$ and Oxygen

$$ CH_4 , NH_3 $$ and $$H_2$$S

$$ CO_2 , NH_3 , H_2 $$ and water vapours

$$ CH_4 , O_3 , O_2 $$ and water vapours

Solution

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