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Questions and Answers
Who discovered the smallest functional unit of life?
Who discovered the smallest functional unit of life?
- Gregor Mendel
- Robert Hooke (correct)
- Anton van Leeuwenhoek
- Louis Pasteur
Which scientist is known for his work on genetics and heredity?
Which scientist is known for his work on genetics and heredity?
- Gregor Mendel (correct)
- Charles Darwin
- Robert Hooke
- Louis Pasteur
What is the basic unit of life?
What is the basic unit of life?
- Tissue
- Organ
- Cell (correct)
- Molecule
What is the outermost covering of a cell called?
What is the outermost covering of a cell called?
What are the two types of cells mentioned in the text?
What are the two types of cells mentioned in the text?
Which process describes the movement of water from a region of high water concentration to a region of low water concentration through a semi-permeable membrane?
Which process describes the movement of water from a region of high water concentration to a region of low water concentration through a semi-permeable membrane?
What is the main component of the plant cell wall that provides structural strength?
What is the main component of the plant cell wall that provides structural strength?
Which organelle plays a central role in cellular reproduction and contains visible rod-shaped structures called chromosomes?
Which organelle plays a central role in cellular reproduction and contains visible rod-shaped structures called chromosomes?
What is the term for the phenomenon where there is shrinkage or contraction of the contents of a living plant cell away from the cell wall due to loss of water through osmosis?
What is the term for the phenomenon where there is shrinkage or contraction of the contents of a living plant cell away from the cell wall due to loss of water through osmosis?
What is the process by which the cell membrane engulfs food and other materials from its external environment, as observed in Amoeba?
What is the process by which the cell membrane engulfs food and other materials from its external environment, as observed in Amoeba?
Which of the following substances can move across the cell membrane by a process called osmosis?
Which of the following substances can move across the cell membrane by a process called osmosis?
In a hypotonic solution, what happens to the cell?
In a hypotonic solution, what happens to the cell?
What is the main component of the plant cell wall that provides structural strength to plant cells?
What is the main component of the plant cell wall that provides structural strength to plant cells?
What is the term for the phenomenon where there is shrinkage or contraction of the contents of a living plant cell away from the cell wall due to loss of water through osmosis?
What is the term for the phenomenon where there is shrinkage or contraction of the contents of a living plant cell away from the cell wall due to loss of water through osmosis?
What are functional segments of DNA called?
What are functional segments of DNA called?
Flashcards
Smallest unit of life
Smallest unit of life
The cell is the smallest functional unit of life.
Genetics pioneer
Genetics pioneer
Gregor Mendel is known for genetics and heredity.
Basic unit of life
Basic unit of life
A cell is the basic unit of life in organisms.
Outermost cell covering
Outermost cell covering
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Types of cells
Types of cells
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Water movement process
Water movement process
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Component of plant cell wall
Component of plant cell wall
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Central organelle in reproduction
Central organelle in reproduction
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Cell contraction due to water loss
Cell contraction due to water loss
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Process of engulfing materials
Process of engulfing materials
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Substance moving by osmosis
Substance moving by osmosis
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Hypotonic solution effect
Hypotonic solution effect
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Section of DNA
Section of DNA
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Phenomenon of plasmolysis
Phenomenon of plasmolysis
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Main plant wall component
Main plant wall component
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Study Notes
The Fundamental Unit of Life
- The smallest functional unit of life is a cell, discovered by Robert Hooke in 1665.
- A cell can independently perform all necessary activities to sustain life, making it the basic unit of life.
Types of Cells
- There are two main types of cells: plant cells and animal cells.
Cell Organelles and Their Functions
- Plasma/Cell membrane: the outermost covering of the cell that separates the contents of the cell from its external environment.
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Description
Get complete notes for Chapter 5: The Fundamental Unit of Life from the NCERT textbook for Class 9 Science. Enhance your understanding with NCERT Solutions for the same chapter. Perfect for students looking to reinforce their knowledge.
