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प्रश्न
Who discovered the cell in 1665?
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उत्तर
The English scientist Robert Hooke discovered the cell in 1665 from cork slices kept under a microscope.
APPEARS IN
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.
What is the name of the chemical substance which constitutes the genes?
Fill up the blank with the terms given below
The ____ is the structural unit of all living things
Write a short answer.
Why are mitochondria called the powerhouse of the cell?
Who proposed the Cell theory? Explain the main points of this theory.
Describe the structure of the chromosome in brief.
Fill in the blank with a suitable word:
______ controls all the metabolic activities of the cell.
Who studied the cell first?
Make sketches of animal and plant cells which you observe under microscope.
Robert Hooke published a book named ______ in the year 1665.
