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प्रश्न
Write true or false for each statement. Rewrite the false statements correctly:
Growth and reproduction are based on cell division
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उत्तर
True
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.
Write short notes on the following.
Nucleus of a cell
Give a brief account of discovery of the cell.
What is the name of the chemical substance which constitutes the genes?
Do you think the cells of an elephant would be larger than the cells of a rat? Explain briefly.
Write true or false for each statement. Rewrite the false statements correctly:
The size of a cell is usually measured in centimetres
Who proposed the Cell theory? Explain the main points of this theory.
Name any five cell organelles.
What was the contribution of the following to our knowledge of cells?
Robert Hooke
Nerve cell is the longest cell
