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प्रश्न
Write about the contribution of Robert Hooke in cell biology.
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उत्तर
Robert hooke was a scientist and inventor. He improved the microscope and built a compound microscope. One day he made thin sections of the cork and observed many small identical chambers through his microscope. They were hexagonal in shape. Based on these observations Hooke published a book named Micrographia in the year 1665, where he first used the term Cell. He describes the structure of tissue using the term cell.
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संबंधित प्रश्न
Write short notes on the following.
Nucleus of a cell
All life starts as _________.
A plant cell can be identified from an animal cell by the :
Name the part of the cell concerned with the following :
The entry of only certain substances into and out of the cell.
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 |
Where are the genes located in a cell?
Define the term cell? Also, describe types of cells.
Fill in the blank with a suitable word:
Cell ______ was proposed by Schleiden and Schwann.
Name the different organelles in a cell?
