Class 10 Science Chapter 9 MCQ

Class 10 Science Chapter 9 MCQ (Multiple Choice Questions) of Heredity and Evolution. All the objective questions are important for examination point of view. Practice science chapter 9 of class 10 here with these MCQs and score better in all exams.

All the MCQs are taken from NCERT Textbooks issued for new academic session 2021-2022.




Class 10 Science Chapter 9 MCQ Online Test for 2021-2022

Class: 10Science
Chapter: 9Heredity and Evolution
Contents:MCQ Online Tests with Answers and Explanation

Class 10 Science Chapter 9 MCQ with Answers for 2021-22

Class 10 Science Chapter 9 MCQ Online Test with solutions and answers. All the questions are taken from NCERT intext part as well as exercises section. Answers and explanation are also taken from NCERT Books for Class 10 Science only.

Q1

Read the following sentences carefully, and choose the incorrect one:

[A]. British scientist J.B.S. Haldane suggested in 1829 that life must have developed from the simple inorganic molecules.
[B]. It has been established by research that the earliest members of the human species came from Africa.
[C]. All human beings are a single species called “Homo sapiens”.
[D]. None of the above
Q2

Which of the following statement is or are correct?

[A]. The most accepted theory of evolution is the “Synthetic Theory of Evolution” in which the origin of species is based on the interaction of “genetic variation” and “natural selection”.
[B]. The complex body organs of animals such as “eyes” have been created in “stages” over many generations.
[C]. When farmer opted for the arrested flower development of wild cabbage plant, it leads to the production of another variety of cabbage called “Broccoli”.
[D]. All the above




Q3

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. The changes in the non-reproductive body cells of an organisms cannot be inherited by its offspring.
[B]. A trait or characteristic of an organism which is “not inherited” but develops in response to the environment is called an acquired trait.
[C]. A trait of an organisms which is caused by a change is in its genes or DNA is called an inherited trait.
[D]. The acquired traits of organisms can be passed on to their future generations.
Q4

According to the evolutionary theory, formation of a new species is generally due to

[A]. Sudden creation by nature
[B]. Accumulation of variations over several generations
[C]. Clones formed during asexual reproduction
[D]. Movement of individuals from one habitat to another




Q5

A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?

[A]. Carrot and potato
[B]. Carrot and tomato
[C]. Radish and carrot
[D]. Radish and potato
Q6

New species may be formed if:

[A]. DNA undergoes significant changes in germ cell, and Chromosome number changes in the gamete
[B]. DNA undergoes significant changes in germ cells and There is no change in the genetic material.
[C]. Chromosome number changes in the gamete, and there is no change in the genetic material, and mating does not take place
[D]. DNA undergoes significant changes in germ cells, and chromosome number changes in the gamete, and there is no change in the genetic material




Q7

The maleness of a child is determined by

[A]. The X chromosome in the zygote
[B]. The Y chromosome in zygote
[C]. The cytoplasm of germ cell which determines the sex
[D]. Sex is determined by chance
Q8

Which of the following statement is incorrect?

[A]. For every hormone there is a gene.
[B]. For every protein there is a gene.
[C]. For production of every enzyme there is a gene.
[D]. For every molecule of fat there is a gene



Q9

In order to ensure that he had pure-breeding plants for his experiments, Mendel:

[A]. Cross-fertilised each variety with each other
[B]. Let each variety self fertilise for several generations
[C]. Removed the female parts of the plants
[D]. Removed the male parts of the plants.
Q10

Which of the following statement is or are correct?

[A]. Gregor Mendel was the first scientist to make a systematic study of patterns of inheritance which involved the transfer of characteristics from parents to progeny.
[B]. The gene which can decide the appearance of an organism only in the presence of another identical gene is called a recessive gene.
[C]. The gene which decides the appearance of an organism even in the presence of an alternative gene is known as dominant gene.
[D]. All the above

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Which type of traits can be inherited?

Those Variations, which arise during the process of reproduction, can be inherited.

What is meant by heredity?

Transfer of traits from parents to offspring is called heredity.

How do we determine the age of fossil?

There are two components to determine the age. One is, if we dig into the earth and start finding fossils, it is reasonable to suppose that the fossils we find closer to the surface are more recent than the fossils we find in deeper layers. The second way of dating fossils is by detecting the ratios of different isotopes of the same element in the fossil material.

What are fossils?

When a living being dies and the dead body gets caught in hot mud, for example, it will not decompose quickly, and the mud will eventually harden and retain the impression of the body parts of the living being. All such preserved traces of living organisms are called fossils.