Monday, 30 August 2021

CBSE Class 9 Biology - Cell: The Fundamental Unit of Life (MCQs)(#class9Biology)(#cbse2021)(#eduvictors)

CBSE Class 9 Biology - Cell: The Fundamental Unit of Life (MCQs)

CBSE Class 9 Biology - Cell: The Fundamental Unit of Life (MCQs)(#class9Biology)(#cbse2021)(#eduvictors)

Image Credits: Animal Cell By OpenStax, wikimedia


Choose the correct option from the MCQs given:


Q1: Which structure in plant cell is responsible for providing the energy required to drive cellular processes?

(a) Chloroplast

(b) Mitochondrion

(c) Nucleus

(d) Golgi apparatus


Q2: Cell theory was proposed by:

(a) Robert Brown

(b) Robert Hook

(c) Schleiden and Schwann 

(d) Anton von Leeuwenhoek


Q3: What is the meaning of “Omni’s Cellulae Cellula”?

(a) All organisms are composed of cells.

(b) Cell is basic structural unit of an organism.

(c) Cells are capable of producing more of themselves. 

(d) Cells arise from the division of pre-existing cell.


Q4: Which of the following can be made into crystal?

(a) A bacterium 

(b) An amoeba 

(c) A virus

(d) A sperm



Q5: What is the important function of nucleus?

(a) Photosynthesis

(b) Cellular reproduction 

(c) Lipid synthesis

(d) Synthesis of ATP



Q6: Which of the following is a major difference between prokaryotes and eukaryotes? 

(a) Prokaryotic cells have cell walls, while eukaryotic cells do not.

(b) Eukaryotic cells have flagella, while prokaryotic cells do not.

(c) Eukaryotic cells are membrane-bound organelles, while prokaryotic cells are not.

(d) Prokaryotic cells are generally larger than eukaryotic cells.



Q7: The transportation of materials in the cell is done by

(a) Golgi complex

(b) lysosomes

(c) mitochondria

(d) endoplasmic reticulum


Q8: A cell will swell up if:

(a) The concentration of water molecules in the cell is higher than the concentration of water molecules in surrounding medium.

(b) The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell.

(c) The concentration of water molecules is same in the cell and in the surrounding medium. 

(d) Concentration of water molecules does not matter.



Q9: Find the best definition of ‘vacuole’.

(a) A fluid filled structure surrounded by membrane.

(b) A thread like structure containing nuclear material.

(c) A jelly like substance which is present between nucleus and cell membrane. 

(d) The basic structural units of an organism.



Q10: Plasmolysis in a plant cell is defined as:

(a) Break down (lysis) of plasma membrane in hypotonic medium 

(b) Shrinkage of cytoplasm in hypertonic medium

(c) Shrinkage of nucleoplasm

(d) None of the above



Q11: Identify the organelle that exists only in plant cell but NOT in an animal cell.

(a) Centriole

(b) Chloroplast

(c) Golgi apparatus

(d) Ribosome



Q12: ‘X’ is a double membraned organelle that oxidises the food present in cell to release energy. X is a:

(a) nucleus

(b) endoplasmic reticulum

(c) mitochondrion 

(d) chloroplast



Q13: Which of the following is found in prokaryotic and eukaryotic cells? 

(a) mitochondria

(b) ribosomes

(c) chloroplasts

(d) endoplasmic reticulum



Q14: Which cell organelle often takes up much of the volume (> 95%) of a plant cell? 

(a) lysosome

(b) vacuole

(c) Golgi apparatus

(d) chloroplast



Q15: Which among the following are prokaryotes?

(a) Bacteria and Yeast

(b) Blue-green algae and bacteria

(c) Yeast and Amoeba

(d) Bacteria and Amoeba



Q16: Organelle which plays an important role in detoxification of drugs and toxins is:

(a) Golgi apparatus

(b) Lysosomes 

(c) Vacuoles

(d) Smooth ER 


Q17: Active transport across cell membrane requires

(a) Glucose

(b) Steroids

(c) Energy in the form ATP

(d) Proteins and glucose


Q18: Nucleolus is the seat of

(a) Protein synthesis

(b) Ribosome organisation

(c) Enzyme synthesis

(d) rRNA synthesis


Q19: Which cell organelles are called protein factories?

(a) ribosomes

(b) lysosomes

(c) mitochondria

(d) Golgi bodies


Q20: Which of the following organelles produces and modifies complex sugars?

(a) Lysosomes

(b) Mitochondria

(c) Golgi apparatus

(d) Endoplasmic reticulum


Assertion and Reason Based Questions

DIRECTION : In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

(c) Assertion (A) is true but reason (R) is false.

(d) Assertion (A) is false but reason (R) is true.



Q21: Assertion : The endoplasmic reticulum which lacks ribosomes is called smooth endoplasmic reticulum (SER).

Reason : SER is mainly involved in protein synthesis.


Q22: Assertion: Mitochondria and chloroplasts are semiautonomous organelles.

Reason : They are formed by division of pre-existing organelles and contain DNA but lack protein synthesising machinery.


Q23: Assertion : Mitochondria are called ‘powerhouses’ of the cell. 

Reason : Mitochondria produce cellular energy in the form of ATP.


Q24: Assertion : Plant cells have very large vacuoles. 

Reason : In plant cells, vacuoles are full of cell sap.


Q25: Assertion : Plasma membrane is fully permeable.

Reason : Plasma membrane allows some molecules to pass through it more easily than

others.



Answers:

1: (a) Chloroplast

2: (c) Schleiden and Schwann 

3: (d) Cells arise from the division of pre-existing cell.

4: (c) A virus

5: (b) Cellular reproduction 

6: (c) Eukaryotic cells are membrane-bound organelles, while prokaryotic cells are not.

7: (d) endoplasmic reticulum

8: (b) The concentration of water molecules in surrounding medium is higher than water molecules concentration in the cell.

9: (a) A fluid filled structure surrounded by membrane.

10: (b) Shrinkage of cytoplasm in hypertonic medium

11: (b) Chloroplast

12: (c) mitochondrion 

13: (b) ribosomes

14: (b) vacuole

15: (b) Blue-green algae and bacteria

16: (d) Smooth ER 

17: (c) Energy in the form ATP

18: (d) rRNA synthesis

19: (a) ribosomes

20: (c) Golgi apparatus

21: (b)

22: (c)

23: (a)

24: (a)

25: (d)


👉See Also:

No comments:

Post a Comment

We love to hear your thoughts about this post!