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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
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
- Keep cup A empty
- Put one teaspoon of sugar in cup B
- Put one teaspoon salt in cup C
- Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then, observe the four potato cups and answer the following:
- Explain why water gathers in the hollowed portion of B and C.
- Why is potato A necessary for this experiment?
- Explain why water does not gather in the hollowed-out portions of A and D.
Which one of the following is found both in the cells of a mango plant and a monkey?
What is the cell theory? Who propounded it and when?
Write a short answer.
Why are mitochondria called the powerhouse of the cell?
Why was the invention of the microscope so important to the study of living beings?
Where is energy stored in a cell?
The instrument used to observe the cell is _____
Nerve cell is the longest cell
Robert Hooke saw many objects like Butterfly’s compound eyes, Bee’s wings, etc.
