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WHAT ARE LIVING ORGANISMS MADE OF?

Define a cell. Who coined the term ‘cell’?
1.Who discovered the cell and how?
2.“Every multicellular organism has evolved from a single celled organism.” Comment on the statement
3.citing a few examples.
Who discovered free–living cell for the first time and where?
4.Who discovered the nucleus and when?
5.Who coined the term ‘protoplasm’? What does it mean?
6.What is the contribution of the “cell theory” to modern science? Who gave it?
7.What is the contribution of ‘Virchow’ to modern science?
8.Suggest two factors, on which the shape of a body cell depends? Support your answer giving the shape of various human cells.
Name and draw the longest cell in the human body.
10.Distinguish between unicellular and multicellular organisms.
11.What is the significance of division of labour in cells of multicellular organisms? Is the same observed in unicellular organisms?
Name the basic structural and functional unit of life? Why is it called so?
13.Name: (a) four unicellular organisms
14.b) four multicellular organisms
(c) four different cells present in human body
The invention of the light microscope proved a revolution to the microscopic world. Is the statement true or false? Correct the statement, if it is false by changing just one word.
Name the parts of a compound microscope.
16.Draw the diagram of a typical animal cell and label its components.
17.Draw the diagram of a typical plant cell and label its components.

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