Cell Organelles Quiz for Class 9

Cells have many parts that work together to keep them alive and active. Different types of cells have different structures and features. This 30-question Class 9 Science quiz will help you revise these cell structures and understand their functions.

Prokaryotic cells do not have a well-defined nucleus or membrane-bound organelles. Eukaryotic cells have a well-defined nucleus and several membrane-bound organelles.

The nucleus contains DNA, which carries important information for the structure and activities of the cell. Other cell parts, such as ribosomes, the endoplasmic reticulum (ER), and the Golgi apparatus, also perform important jobs.

Quiz Time:

Cell Types, Nucleus, DNA, ER, Ribosomes & Golgi Quiz

Test your knowledge of prokaryotic and eukaryotic cells, the nucleus, DNA, chromosomes, genes, ribosomes, ER, and Golgi apparatus with 30 multiple-choice questions. Revise the structure and functions of these important parts of the cell.

Identify the key fact or definition described in the question.

1 / 30

1. What are lysosomes filled with?

a) Cellulose

b) DNA

c) Chlorophyll

d) Enzymes

Identify the key fact or definition described in the question.

2 / 30

2. What is usually found as a large central vacuole in a mature plant cell?

a) One large lysosome

b) Many nuclei

c) One large vacuole

d) No storage organelle

Identify the key fact or definition described in the question.

3 / 30

3. What does the Golgi apparatus do with proteins and/or lipids?

a) Stores them permanently in the nucleus

b) Converts them into DNA

c) Modifies, sorts and packages them into vesicles

d) Destroys all proteins

Identify the key fact or definition described in the question.

4 / 30

4. What is the main function of ribosomes?

a) Waste storage

b) Protein synthesis

c) DNA storage

d) Lipid storage

Identify the key fact or definition described in the question.

5 / 30

5. What are plastids containing pigments other than chlorophyll called?

a) Leucoplasts

b) Ribosomes

c) Chromoplasts

d) Lysosomes

Identify the key fact or definition described in the question.

6 / 30

6. What happens to chromatin when a cell is about to divide?

a) It changes into ATP

b) It disappears

c) It becomes organised into chromosomes

d) It becomes a cell wall

Identify the key fact or definition described in the question.

7 / 30

7. What are colourless plastids called?

a) Chloroplasts

b) Mitochondria

c) Chromoplasts

d) Leucoplasts

Identify the key fact or definition described in the question.

8 / 30

8. Which pigment in chloroplasts absorbs sunlight?

a) Chlorophyll

b) Melanin

c) Haemoglobin

d) Carotene only

Identify the key fact or definition described in the question.

9 / 30

9. What does smooth ER help synthesize and store?

a) ATP and ribosomes

b) Fats and hormones

c) DNA and chromosomes

d) Cellulose and starch only

Identify the key fact or definition described in the question.

10 / 30

10. The ER is continuous with which part of the nuclear envelope?

a) Nucleolus

b) Outer membrane

c) Chromosome

d) Inner membrane only

Identify the key fact or definition described in the question.

11 / 30

11. What do chloroplasts and mitochondria have in common?

a) Both have their own DNA and ribosomes

b) Both lack membranes

c) Both store only water

d) Both occur only in animal cells

Identify the key fact or definition described in the question.

12 / 30

12. What did J. Craig Venter's team synthesise in the 2010 experiment described?

a) A new nucleus from proteins

b) A new cell wall from cellulose

c) A complete cell from chemicals

d) An exact copy of bacterial DNA

Identify the key fact or definition described in the question.

13 / 30

13. Why does rough ER look rough under an electron microscope?

a) Ribosomes are attached to its surface

b) It stores starch

c) It has no membrane

d) It contains cellulose

Identify the key fact or definition described in the question.

14 / 30

14. What do the similarities between mitochondria, plastids and certain bacteria suggest?

a) They are all viruses

b) They are all animal tissues

c) They have no genetic material

d) They share an evolutionary history with single-celled organisms

Identify the key fact or definition described in the question.

15 / 30

15. How do cristae help mitochondria?

a) They make the cell wall rigid

b) They increase surface area for chemical reactions and facilitate energy production

c) They store chromosomes

d) They allow viruses to enter

Identify the key fact or definition described in the question.

16 / 30

16. How does a large plant vacuole help keep a plant cell firm?

a) It stops all osmosis

b) It removes the cell wall

c) It produces DNA

d) It stores water and maintains pressure inside the cell

Identify the key fact or definition described in the question.

17 / 30

17. Why can mature human RBCs not repair or divide themselves?

a) They lack a membrane

b) They lack haemoglobin

c) They lack a nucleus

d) They lack cytoplasm

Identify the key fact or definition described in the question.

18 / 30

18. What is the endoplasmic reticulum best described as?

a) A rigid outer wall

b) A DNA storage body

c) A pigment-containing plastid

d) A network-like organelle spread through the cytoplasm

Identify the key fact or definition described in the question.

19 / 30

19. What process breaks down glucose to release energy in mitochondria?

a) Photosynthesis

b) Osmosis

c) Cellular respiration

d) Mitosis

Identify the key fact or definition described in the question.

20 / 30

20. How can bright colours of flowers and fruits help plants?

a) They destroy seeds

b) They attract pollinators and fruit-eating animals

c) They stop photosynthesis

d) They prevent all water loss

Identify the key fact or definition described in the question.

21 / 30

21. Why does the absence of a nucleus in mature human RBCs provide an advantage?

a) It creates a cell wall

b) It produces more chromosomes

c) It stops oxygen transport

d) It provides more space for haemoglobin

Identify the key fact or definition described in the question.

22 / 30

22. In what form is released energy stored for cellular activities?

a) RNA

b) DNA

c) Cellulose

d) ATP

Identify the key fact or definition described in the question.

23 / 30

23. What is rough ER mainly involved in?

a) Protein synthesis and secretion

b) Cell wall formation

c) DNA replication

d) Starch storage

Identify the key fact or definition described in the question.

24 / 30

24. What can lysosomal enzymes break down?

a) Only DNA

b) Only water

c) Unwanted proteins, carbohydrates, fats and damaged cell parts

d) Only oxygen

Identify the key fact or definition described in the question.

25 / 30

25. What do leucoplasts store?

a) Only pigments

b) Only ATP

c) Starch, oils or proteins

d) Only DNA

Identify the key fact or definition described in the question.

26 / 30

26. What organelles do plants use for food synthesis and storage?

a) Ribosomes

b) Lysosomes

c) Plastids

d) Centrioles

Identify the key fact or definition described in the question.

27 / 30

27. What process do plants carry out in chloroplasts in the presence of sunlight?

a) Osmosis

b) Mitosis

c) Photosynthesis

d) Diffusion

Identify the key fact or definition described in the question.

28 / 30

28. Why are mitochondria called the powerhouses of the cell?

a) They package proteins

b) They form the cell wall

c) They store all genetic information

d) They supply energy needed for most cellular activities

Identify the key fact or definition described in the question.

29 / 30

29. Which type of ER lacks ribosomes on its surface?

a) Rough ER

b) Golgi apparatus

c) Smooth ER

d) Lysosome

Identify the key fact or definition described in the question.

30 / 30

30. Which processes are associated with ER?

a) Only DNA replication

b) Only water storage

c) Only cell division

d) Synthesis and transport of proteins, lipids and some hormones

Your score is

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What This Quiz Covers

Prokaryotic and eukaryotic cells
Differences between prokaryotic and eukaryotic cells
Nucleoid in prokaryotic cells
Structure and function of the nucleus
Nuclear membrane and nucleolus
DNA, chromosomes, genes, and chromatin
Role of DNA in cells
Red blood cells and their lack of a nucleus
Ribosomes and protein synthesis
Endoplasmic reticulum (ER)
Rough endoplasmic reticulum (RER)
Smooth endoplasmic reticulum (SER)
Functions of RER and SER
Golgi apparatus
Modification, sorting, and packaging of substances
Formation of vesicles
Role of cell organelles in cell activities

Why Take This Quiz?

This quiz can help Class 9 students:

Revise important cell structures
Understand prokaryotic and eukaryotic cells
Learn the role of the nucleus and DNA
Understand chromosomes and genes
Review the functions of ribosomes
Learn the difference between RER and SER
Understand the role of the Golgi apparatus
Practise multiple-choice questions
Prepare for school tests and exams
Find topics that need more revision

Read each question carefully and choose the answer that best fits the question.

Key Points

Prokaryotic cells: Do not have a well-defined nucleus or membrane-bound organelles.
Eukaryotic cells: Have a well-defined nucleus and membrane-bound organelles.
Nucleoid: The region where the genetic material lies in a prokaryotic cell.
Nucleus: Controls many cell activities and contains genetic material.
DNA: Carries important information that controls the structure and activities of cells.
Chromosomes: Contain DNA and become clearly visible during cell division.
Genes: Functional segments of DNA.
Ribosomes: Help make proteins.
Rough ER: Has ribosomes and helps make and transport proteins.
Smooth ER: Does not have ribosomes and helps make and store fats and hormones.
Golgi apparatus: Modifies, sorts, and packages substances into vesicles.
Vesicles: Small structures that help transport packaged materials within or outside the cell.
Red blood cells: Mature human red blood cells do not have a nucleus, which provides more space for haemoglobin.

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Cell Types, Nucleus, DNA, ER, Ribosomes & Golgi Quiz for Class 9

Quiz Time:

What This Quiz Covers

Why Take This Quiz?

Key Points

Explore More Cell Quizzes

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