Chapter Exam

Chapter 5: The Fundamental Unit of Life — Online MCQ Test

Q: Who discovered the cell in cork cells?

Answer: A. Robert Hooke — Robert Hooke observed thin slices of cork and coined the term 'cell'.

Q: The plasma membrane is also called the:

Answer: B. Cell membrane — The plasma membrane is the same as the cell membrane and forms the outer boundary of the cell contents.

Q: What is the main function of the cell wall in plant cells?

Answer: B. To provide support and protection — The cell wall is a rigid outer layer that gives shape, support, and protection to plant cells.

SCIENCE · CLASS 9th · Karnataka State Board

Practice Chapter 5: The Fundamental Unit of Life with a free chapter-wise online MCQ test for Karnataka State Board CLASS 9th SCIENCE. This chapter covers: This chapter covers cell discovery cell theory prokaryotic eukaryotic cells plasma membrane cell wall organelles nucleus cytoplasm and cell division.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 5: The Fundamental Unit of Life — Important Questions & Answers (FAQ)

Frequently asked questions from Karnataka State Board CLASS 9th SCIENCE — Chapter 5: The Fundamental Unit of Life, with answers and explanations. These are sample questions; the exam has its own separate question set.

Who discovered the cell in cork cells?

A. Robert Hooke ✓
B. Robert Brown
C. Schleiden
D. Schwann

Answer: A. Robert Hooke
Robert Hooke observed thin slices of cork and coined the term 'cell'.

The plasma membrane is also called the:

A. Cell wall
B. Cell membrane ✓
C. Nuclear membrane
D. Vacuolar membrane

Answer: B. Cell membrane
The plasma membrane is the same as the cell membrane and forms the outer boundary of the cell contents.

What is the main function of the cell wall in plant cells?

A. To control cell division
B. To provide support and protection ✓
C. To digest food particles
D. To store hereditary material

Answer: B. To provide support and protection
The cell wall is a rigid outer layer that gives shape, support, and protection to plant cells.

Why are red blood cells in humans considered different from onion cells?

A. RBCs have a cell wall and onion cells do not
B. RBCs lack a nucleus, while onion cells usually have one ✓
C. RBCs are prokaryotic, while onion cells are prokaryotic
D. RBCs contain chloroplasts, while onion cells do not

Answer: B. RBCs lack a nucleus, while onion cells usually have one
Mature human red blood cells do not have a nucleus, but onion cells are eukaryotic and possess a nucleus.

Which statement about the cell theory is correct?

A. All cells arise only by spontaneous generation
B. All living organisms are made of one or more cells ✓
C. Cells are visible only under a dissecting microscope
D. Only plant and animal cells are living

Answer: B. All living organisms are made of one or more cells
The cell theory states that all living organisms are composed of cells and the cell is the basic unit of life.

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