Class 9 Science Chapter 5 MCQ

Class 9 Science Chapter 5 MCQ (Multiple Choice Questions) of The Fundamental Unit of Life. All the questions are important and useful for clearing the doubts in chapter 5 of standard 9 science.

These questions provide a perfect practice for the preparation of school unit tests or terminal exams. These questions take less time to revise and provide maximum result in exams. So, practice here with MCQs and get good marks in exams.

Class 9 Science Chapter 5 MCQ Online Tests for 2021-2022

Class: 9Science
Chapter: 5The Fundamental Unit of Life
Contents:MCQ Online Tests with Answers

Class 9 Science Chapter 5 MCQ with Answers for 2021-22

Class 9 Science Chapter 5 MCQ Online Test contains about 75 questions in all with answers and explanation. New questions will be added time to time to increase the question bank. All the questions are taken from NCERT Books for 9th Standard Science issued for academic session 2021-2022.


Which of the following statement is or are correct?

[A]. The vacuolar membrane is typically a single unit member and is often associated with the maintenance of water balance or ingestion of nutrient material.
[B]. In plant cells, the vacuoles are large, distinct and permanent.
[C]. Peroxisomes are specialized for carrying out some oxidative reactions, such as detoxification or removal of toxic substances from the cell.
[D]. All the above.

Consider the following statements and choose the incorrect one:

[A]. Stroma are stacks of membrane bounded flattened discoid sacs containing the molecules of chlorophyll.
[B]. Granum is the site of light reactions during photosynthesis, while stroma former is the site of dark reaction during photosynthesis.
[C]. Chromoplasts impart various colors to flowers to attract insects for pollination.
[D]. Leucoplasts store food in the form of carbohydrates (starch), fats and protein.


Cell arises from pre-existing cell was stated by

[A]. Haeckel
[B]. Virchow
[C]. Hooke
[D]. Schleiden

In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were correct? Will you be able to answer this question?

[A]. The chromatin material is a thin, thread like intertwined mass of chromosome material and composed of the genetic substance DNA and proteins.
[B]. DNA store all the information necessary for the cell to functions to grow and to reproduce further cells of the next generation.
[C]. Chromosomes are thread like structures usually present in the nucleus that become visible only during cell division.
[D]. All the above.


Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. Cell wall permits the plant cell to become turgid.
[B]. In plant cells, there occurs a rigid cell wall which lies outside the plasma membrane.
[C]. The plant cell wall, thus, consists of tiny cellulose fibres called microfibrils.
[D]. The cell walls of adjacent cells are glued together by the plasmodesmata.

Organelle other than nucleus, containing DNA is

[A]. Endoplasmic reticulum
[B]. Golgi apparatus
[C]. Mitochondria
[D]. Lysosome


The proteins and lipids, essential for building the cell membrane, are manufactured by

[A]. Endoplasmic reticulum
[B]. Golgi apparatus
[C]. Plasma membrane
[D]. Mitochondria

Find out the correct sentence

[A]. Enzymes packed in Lysosomes are made through RER (rough endoplasmic reticulum)
[B]. Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively
[C]. Endoplasmic reticulum is related with the destruction of plasma membrane
[D]. Nucleoid is present inside the nucleoplasm of eukaryotic nucleus


Find out the false sentences

[A]. Golgi apparatus is involved with the formation of lysosomes
[B]. Nucleus, mitochondria and plastid have DNA; hence they are able to make their own structural proteins
[C]. Mitochondria is said to be the power house of the cell as ATP is generated in them.
[D]. Cytoplasm is called as protoplasm

Which of these is not related to endoplasmic reticulum?

[A]. It behaves as transport channel for proteins between nucleus and cytoplasm
[B]. It transports materials between various regions in cytoplasm
[C]. It can be the site of energy generation
[D]. It can be the site for some biochemical activities of the cell
What do understand by Hypertonic solution?

If the medium has a lower concentration of water than the cell, meaning that it is a very concentrated solution, the cell will lose water by osmosis. Such a solution is known as a hypertonic solution.

What is Plasmolysis?

When a living plant cell loses water through osmosis there is shrinkage or contraction of the contents of the cell away from the cell wall. This phenomenon is known as plasmolysis.

Why are Lysosomes known as suicide bags?

During the disturbance in cellular metabolism, for example, when the cell gets damaged, lysosomes may burst and the enzymes digest their own cell. Therefore, lysosomes are also known as the ‘suicide bags’ of a cell.

How does Mitochondria make their own protein?

Mitochondria have their own DNA and ribosomes. Therefore, mitochondria are able to make some of their own proteins.

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