The Fundamental Unit of Life Class 9 MCQs with Answers
The Fundamental Unit of Life Class 9 MCQs with Answers (NCERT-Based)
CBSE Board Examination – Systematic MCQ Practice
Class: 9
Subject: Science
Section: Biology
Topic: The Fundamental Unit of Life
These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 9 Science examinations. Each question includes detailed explanations for strong conceptual clarity.
1. The basic unit of life is:
Answer: C
Cells perform all vital life functions; hence they are called the structural and functional unit of life.
Cells perform all vital life functions; hence they are called the structural and functional unit of life.
2. Who discovered the cell?
Answer: B
Robert Hooke observed cork under a microscope in 1665 and coined the term “cell”.
Robert Hooke observed cork under a microscope in 1665 and coined the term “cell”.
3. Cell membrane is:
Answer: B
It allows selective substances to pass, maintaining internal balance.
It allows selective substances to pass, maintaining internal balance.
4. Diffusion is movement of substances from:
Answer: B
Particles move down the concentration gradient without energy use.
Particles move down the concentration gradient without energy use.
5. Osmosis occurs through:
Answer: B
Osmosis is diffusion of water across a semi-permeable membrane.
Osmosis is diffusion of water across a semi-permeable membrane.
6. Cell wall is present in:
Answer: B
Plant cells have a rigid cellulose cell wall for protection and shape.
Plant cells have a rigid cellulose cell wall for protection and shape.
7. Control center of cell:
Answer: B
Nucleus regulates activities and stores genetic material.
Nucleus regulates activities and stores genetic material.
8. Site of protein synthesis:
Answer: B
Ribosomes assemble amino acids to form proteins.
Ribosomes assemble amino acids to form proteins.
9. Powerhouse of the cell:
Answer: C
Mitochondria generate ATP through respiration.
Mitochondria generate ATP through respiration.
10. Plastids are found in:
Answer: B
They help in photosynthesis and storage.
They help in photosynthesis and storage.
11. Green plastids are:
Answer: C
Contain chlorophyll for photosynthesis.
Contain chlorophyll for photosynthesis.
12. Storage plastids:
Answer: A
Store starch, oils, proteins.
Store starch, oils, proteins.
13. Packaging organelle:
Answer: B
Golgi modifies, packages, and transports substances.
Golgi modifies, packages, and transports substances.
14. Detoxification occurs in:
Answer: A
SER synthesizes lipids and detoxifies drugs.
SER synthesizes lipids and detoxifies drugs.
15. Suicide bags:
Answer: A
Contain digestive enzymes that can destroy cell components.
Contain digestive enzymes that can destroy cell components.
16. Large vacuole found in:
Answer: B
Maintains turgidity and stores substances.
Maintains turgidity and stores substances.
17. Prokaryotes lack:
Answer: C
Genetic material is not membrane-bound.
Genetic material is not membrane-bound.
18. Eukaryotic cells have:
Answer: B
They possess membrane-bound organelles.
They possess membrane-bound organelles.
19. Jelly-like substance:
Answer: A
Site of metabolic activities.
Site of metabolic activities.
20. Cell theory given by:
Answer: B
They proposed that all living organisms are made of cells.
They proposed that all living organisms are made of cells.