Heredity and Evolution Test

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Heredity and Evolution Test - 27

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Weekly Quiz Competition

Question 1
1 / -0

What are inherited traits ?

A
Traits that are acquired naturally in the body.

B
Traits that are acquired after birth.

C
Traits that are transmitted from the parents to the next generation.

D
Traits that are acquired due to environmental conditions.

Solution

The traits which are transferred by the parent to its offspring through the process of fertilization are called inherited traits. These traits are inherited before birth in the womb itself. For example, in humans- eye colour, hair colour, skin colour, freckles, dimples, etc.
Therefore, the correct answer is option C.
Question 2
1 / -0

In an experiment on mice, the tails of the mice are removed by surgery and then allowed to mate. This will result in what type of progeny?

A
With tail

B
Without tail

C
With tail but of medium length

D
No progeny will born

Solution

The progeny of mice will not be tailless because the removal of the tail cannot change the genes of the germ cells of the mice. This will not pass onto the next progeny. Hence, the next progeny developed will be born with a tail. Therefore, A is the correct answer.
Question 3
1 / -0

Name the factors that cannot be considered as a trait which can be inherited by the progeny.

A
Colour

B
Size

C
Length of hair

D
Both A and B
Solution
- The length of the hair depends from individual to individual, this will not alter the DNA of the germ cells.
- Hence, the length of hair is not a trait that can be inherited.
- Also, the changes in non-reproductive tissues cannot be transferred; hence, the experiences of an individual during its lifetime cannot be passed on to the progeny.
Therefore, C is the correct answer.
Question 4
1 / -0

Mendel carried out his experiment on pea plant. He focused on which of the following traits?

A
Shape of seed

B
Colour of seed

C
Both A and B

D
Size of seed

Solution

Mendel started his first experiment on pea plants.
During his attempt to study the inheritance he considered the colour and shape of the seed.
He concluded from his experiment that more than one trait can be inherited from the parent plant and transmitted further.
His pea plant demonstration became the foundation of the study of Mendelian Traits.
Therefore, (c) is the correct answer.
Question 5
1 / -0

Speciation is a _____________ process.

A
Evolutionary

B
Geographical

C
Geological

D
None of these

Solution

Speciation is the evolutionary process by which new biological species arise. This gives rise to new species with variable traits. Therefore, (a) is the correct answer.
Question 6
1 / -0

Evolution in stages results in __________

A
Human beings

B
Modification

C
Inheritance

D
None of these

Solution

The evolutionary process has developed over millions of years. Lineages evolved and split and modifications occurred gradually in stages. Therefore, (b) is the correct answer.
Question 7
1 / -0

How many X chromosomes are present in a female?

A
$$0$$

B
$$1$$

C
$$2$$

D
$$4$$

Solution

There are two X chromosomes present in a female. Sex pair of chromosome XX represents the female human.
Question 8
1 / -0

Among the following which one is a hereditary trait?

A
Eye colour

B
Hair colour

C
Blood group

D
All of these

Solution

Genes on DNA are responsible for carrying genetic information which is inherited from one generation to another.
The traits like eye colour, hair colour and blood group are controlled by the genes and hence, they can be inherited from one generation to another.
Therefore, the correct answer is option D.
Question 9
1 / -0

I. Herpes is a hereditary disease.
II. Traits transferred from parents to offspring are called heredity.

A
I and II both are false

B
I and II both are true

C
I is true and II is false

D
I is false and II is true

Solution

Herpes is a viral disease that is caused by the herpes simplex virus. It has no effect on the genetic makeup of an individual.
The passing on of characteristics genetically from one generation to another is heredity.
Question 10
1 / -0

The ultimate unit of heredity is:

A
Protein

B
DNA

C
Gene

D
RNA

Solution

In a cell, DNA is tightly packed into chromosomes that are then passed onto offspring. It is the gene that contains the actual information.
Thus, the functional unit of heredity is a gene. Gene is the segment of DNA that provides information for one protein. The proteins regulate the various characteristics of the body.
Thus the correct answer is option C.

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Heredity and Evolution Test - 27

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Heredity and Evolution Test - 27

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Question 1

Traits that are acquired naturally in the body.

Traits that are acquired after birth.

Traits that are transmitted from the parents to the next generation.

Traits that are acquired due to environmental conditions.

Solution

Question 2

With tail

Without tail

With tail but of medium length

No progeny will born

Solution

Question 3

Colour

Size

Length of hair

Both A and B

Solution

Question 4

Shape of seed

Colour of seed

Both A and B

Size of seed

Solution

Question 5

Evolutionary

Geographical

Geological

None of these

Solution

Question 6

Human beings

Modification

Inheritance

None of these

Solution

Question 7

$$0$$

$$1$$

$$2$$

$$4$$

Solution

Question 8

Eye colour

Hair colour

Blood group

All of these

Solution

Question 9

I and II both are false

I and II both are true

I is true and II is false

I is false and II is true

Solution

Question 10

Protein

DNA

Gene

RNA

Solution

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