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The Fundamental Unit of life Class 9 MCQs: Get the most Important MCQs on Class 9 Science Chapter 5 “The Fundamental Unit of Life” to help in your preparation for the upcoming Science Annual Examination.
In Chapter 5 of the Class 9 Science curriculum, titled “The Fundamental Unit of Life,” students can assess their understanding of cell organelles, cellular processes, and cell structure. The chapter presents multiple-choice questions (MCQs) as a valuable tool for students to solidify their understanding of crucial concepts. Taking “The Fundamental Unit of Life Class 9 MCQ online test” is an effective way for students to engage in review, problem-solving, critical thinking, and retention of key information. They help students gain confidence and prepare effectively for their annual exams.
The Fundamental Unit of Life Class 9 MCQ (Easy to Moderate Level)
What is the structural and functional unit of life?
A) Cell
B) Organism
C) Tissue
D) Organ
Answer: A) Cell
Who discovered the cell?
A) Robert Hooke
B) Anton van Leeuwenhoek
C) Louis Pasteur
D) Robert Brown
Answer: A) Robert Hooke
Which scientist proposed the cell theory?
A) Matthias Schleiden and Theodor Schwann
B) Robert Hooke
C) Louis Pasteur
D) Anton van Leeuwenhoek
Answer: A) Matthias Schleiden and Theodor Schwann
Which cellular component is often referred to as the “powerhouse” of the cell?
A) Golgi apparatus
B) Mitochondria
C) Endoplasmic reticulum
D) Ribosomes
Answer: B) Mitochondria
Which cell organelle is responsible for protein synthesis?
A) Ribosomes
B) Lysosomes
C) Golgi apparatus
D) Endoplasmic reticulum
Answer: A) Ribosomes
Which type of cells lack a well-defined nucleus?
A) Prokaryotic cells
B) Eukaryotic cells
C) Plant cells
D) Animal cells
Answer: A) Prokaryotic cells
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What is the function of the cell membrane?
A) Regulation of cell functions
B) Energy production
C) Protein synthesis
D) Storage of genetic material
Answer: A) Regulation of cell functions
Which cell organelle contains digestive enzymes and helps in the digestion of cellular waste?
A) Golgi apparatus
B) Endoplasmic reticulum
C) Mitochondria
D) Lysosomes
Answer: D) Lysosomes
Which structure is found in plant cells but not in animal cells?
A) Chloroplast
B) Centrioles
C) Lysosomes
D) Nucleus
Answer: A) Chloroplast
What is the function of the nucleus in a cell?
A) Synthesis of proteins
B) Cellular respiration
C) Control of cell activities and storage of genetic material
D) Breakdown of cellular waste
Answer: C) Control of cell activities and storage of genetic material
Also Check other Resources for Class 9 Science Chapter 5
- Class 9 CBSE Notes – Chapter 5 The Fundamental Unit of Life
- Extra Questions Class 9 Science Chapter 5 The Fundamental Unit of Life
- NCERT Exemplar Class 9 Science Solutions Chapter 5 – The Fundamental Unit of Life
The Fundamental Unit of Life Class 9 MCQ (Moderate to High Level)
The fundamental unit of life class 9 MCQs with answers are provided with moderate to high level. One can check the level of their performance by attempting these questions.
Which cellular structure is accountable for the detoxification and metabolism of drugs within liver cells?
A) Golgi apparatus
B) Endoplasmic reticulum
C) Lysosomes
D) Peroxisomes
Answer: D) Peroxisomes
Also Check: NCERT Book Class 9 Science
Which statement does not pertain to the endoplasmic reticulum?
(a) It serves as a conduit for protein transportation between the nucleus and cytoplasm.
(b) It facilitates the movement of materials within the cytoplasm.
(c) It may function as a site for certain cellular biochemical processes.
(d) It can serve as the site for energy production.
Answer: (d) It can serve as the site for energy production.
Osmosis describes the movement of solvent molecules across a semipermeable membrane from a less concentrated solution to a more concentrated one. Which option does not belong to this process?
(a) The movement of water across the membrane depends on the dissolved substances.
(b) Membranes are composed of organic molecules like proteins and lipids.
(c) Solutes soluble in organic solvents can permeate the membrane easily.
(d) Plant plasma membranes contain chitin sugar.
Answer: (d) Plant plasma membranes contain chitin sugar.
The nucleus regulates cell activities and serves as the site for DNA and protein synthesis. Given a figure of the nucleus labeled A, B, C, and D, identify the components correctly.
(a) A – Nucleons; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
(b) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nuclear wall
(c) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
(d) A – Nucleus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
Answer: (c) A – Nucleolus; B – Chromatin; C – Nuclear membrane; D – Nucleoplasm
Unripe fruits are green, but they develop vibrant colors when ripe. What causes this color change?
(a) Chloroplasts transform into chromoplasts.
(b) Chromoplasts transform into chromosomes.
(c) Chloroplasts transform into chromosomes.
(d) Chromoplasts transform into chloroplasts.
Answer: (a) Chloroplasts transform into chromoplasts.
Also Read: CBSE Worksheets for Class 9
- CBSE Worksheets for Class 9 Biology
- CBSE Worksheets for Class 9 Chemistry
- CBSE Worksheets for Class 9 Physics
What is the function of the cytoplasm in a cell?
A) Storage of genetic material
B) Site of photosynthesis
C) Location of cellular metabolism and organelle support
D) Regulation of cell functions
Answer: C) Location of cellular metabolism and organelle support
Which organelle is involved in the synthesis of lipids and detoxification of drugs?
A) Ribosomes
B) Endoplasmic reticulum
C) Golgi apparatus
D) Nucleus
Answer: B) Endoplasmic reticulum
What role does the vacuole play in plant cells?
A) Storage of water, nutrients, and waste products
B) Protein synthesis
C) Energy production
D) Regulation of cell functions
Answer: A) Storage of water, nutrients, and waste products
Which structure helps in the movement of chromosomes during cell division?
A) Centrosome
B) Golgi apparatus
C) Nucleolus
D) Ribosomes
Answer: A) Centrosome
Which organelle is responsible for maintaining cell shape and providing structural support?
A) Mitochondria
B) Cytoskeleton
C) Nucleus
D) Golgi apparatus
Answer: B) Cytoskeleton
What is the function of the cell wall in plant cells?
A) Regulation of cell functions
B) Storage of genetic material
C) Protection and structural support
D) Energy production
Answer: C) Protection and structural support
Which organelle is responsible for the synthesis and packaging of proteins for secretion?
A) Endoplasmic reticulum
B) Ribosomes
C) Golgi apparatus
D) Mitochondria
Answer: C) Golgi apparatus
What is the function of the chloroplast in plant cells?
A) Regulation of cell functions
B) Storage of genetic material
C) Photosynthesis
D) Protein synthesis
Answer: C) Photosynthesis
Which organelle is involved in the breakdown of glucose to produce energy in the form of ATP?
A) Nucleus
B) Lysosomes
C) Mitochondria
D) Endoplasmic reticulum
Answer: C) Mitochondria
The fundamental unit of life class 9 MCQ FAQs
What is the fundamental unit of life?
The fundamental unit of life is the cell, which is the basic building block of all living organisms.
Who discovered the cell?
Robert Hooke discovered the cell in 1665 while observing a thin slice of cork under a microscope.
What are the types of cells?
There are two main types of cells: prokaryotic (no true nucleus) and eukaryotic (with a true nucleus).
What is the cell membrane?
The cell membrane is the outermost layer of the cell that controls the entry and exit of substances.
What is the function of the nucleus in a cell?
The nucleus controls all cellular activities and contains the genetic material (DNA).
What are cell organelles?
Cell organelles are specialized structures inside cells that perform various functions, like the mitochondria, endoplasmic reticulum, and ribosomes.
What is the function of mitochondria?
Mitochondria are known as the powerhouse of the cell, as they generate energy through cellular respiration.
What is cytoplasm?
Cytoplasm is the jelly-like substance within the cell that holds organelles and allows biochemical processes to occur.
What is the difference between plant and animal cells?
Plant cells have a cell wall, chloroplasts, and a large vacuole, while animal cells do not have these structures.
What is the function of chloroplasts?
Chloroplasts are responsible for photosynthesis, the process by which plants make their own food using sunlight.
What are ribosomes?
Ribosomes are organelles that help in protein synthesis by assembling amino acids into proteins.
What is the role of the endoplasmic reticulum?
The endoplasmic reticulum helps in the synthesis of proteins and lipids and transports them within the cell.
What is a vacuole?
A vacuole is a storage organelle in cells, especially large in plant cells, that stores water, nutrients, and waste products.
What is the cell wall?
The cell wall is an additional protective layer found only in plant cells that gives them rigidity and strength.
Why is the cell called the structural and functional unit of life?
Cells make up the structure of organisms and carry out all essential functions needed for life, making them the structural and functional unit of life.
What is osmosis?
Osmosis is the movement of water molecules through a semi-permeable membrane from a region of lower concentration to a region of higher concentration.
What is the function of lysosomes?
Lysosomes are responsible for breaking down waste materials and cellular debris in the cell.
What is the Golgi apparatus?
The Golgi apparatus processes, packages, and transports proteins and lipids within the cell.
How do plant cells make food?
Plant cells make food through photosynthesis, a process carried out in chloroplasts using sunlight, water, and carbon dioxide.
What is the importance of the cell theory?
The cell theory states that all living organisms are made up of cells, and all cells arise from pre-existing cells, highlighting the importance of cells in life.
