10 Questions
Robert Hooke discovered cells in 1665.
True
Cells are the building blocks of life.
True
CO2 and water move in and out of the cell through the cell membrane.
True
The cell membrane is selectively permeable.
True
Cells are not capable of all living functions.
False
Who discovered cells and when?
Cells were discovered in 1665 by an English Botanist, Robert Hooke. He used a primitive microscope to observe cells in a cork slice.
Why is the cell called the structural and functional unit of life?
Cells are referred to as the basic structural and functional units of life because they constitute various components of plants and animals, are capable of all living functions, and are the building blocks of life.
How is the movement of substances like CO2 and water regulated in and out of the cell?
The cell membrane, which is selectively permeable, regulates the movement of substances like CO2 and water in and out of the cell.
What is the significance of the shape and size of a cell?
The shape and size of a cell are related to the specific functions they perform and vary based on the activities they are capable of performing.
What is the function of a cell membrane?
The cell membrane serves as a selectively permeable barrier that regulates the movement of substances in and out of the cell.
Study Notes
Cell Discovery
- Cells were discovered in 1665 by Robert Hooke, an English botanist.
- Hooke used a primitive microscope to observe cells in a cork slice.
Cell as the Basic Unit of Life
- Cells are the smallest units of life and are capable of performing all living functions.
- Cells are the building blocks of life, constituting various components of plants and animals.
- Cells vary in shape, size, and activity, with their shape and size related to specific functions.
Cell Membrane and Transport
- The cell membrane is selectively permeable and regulates the movement of substances in and out of the cell.
- CO2 is produced during cellular respiration and moves out of the cell.
- Water and other substances move in and out of the cell through the cell membrane.
Test your knowledge of the discovery of cells and their significance as the structural and functional unit of life with this quiz based on Class 9 Page 59. Learn about Robert Hooke's groundbreaking discovery and the essential role of cells in living organisms.
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