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प्रश्न
Who discovered cells and how?
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उत्तर
- The cell was discovered in 1665 by Robert Hooke. Using a crude microscope he had made himself, he studied a thin slice of cork and noticed that it had many tiny compartments, much like a honeycomb.
- The term "cells" that he gave them is a translation of the Latin word "cellula," which means "a little room."
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संबंधित प्रश्न
Write down differences between organ and organelle.
Differences between light microscope and electron microscope.
The cell organelle that helps in the respiration of the cell is :
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
Write true or false for each statement. Rewrite the false statements correctly:
The size of a cell is usually measured in centimetres
Give one main function of the following:
Chloroplast
the question has four options. Choose the correct answer:
The word cell was given by
Who discovered the cell in 1665?
Matching:
| 1. | Discovery of cell | a. | Nerve cell |
| 2. | Unicellular organism | b. | spirogyra |
| 3. | Multicellular organism | c. | Robert Hooke |
| 4. | Longest cell | d. | Cyanobacteria |
| 5. | Prokaryotic cell | e. | Amoeba |
Robert Hooke published a book named ______ in the year 1665.
