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प्रश्न
Write a short answer.
What is the relationship between growth and cell division?
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उत्तर
The life of all multicellular organisms begins with a single cell. This cell divided and redivides, thereby forming a cluster of many cells. So cell division is necessary for growth.
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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.
Write short notes on the following.
Nucleus of a cell
Differences between light microscope and electron microscope.
A plant cell has a cell wall made of :
Name the scientist who invented the first microscope.
Fill in the blank with a suitable word:
DNA is an abbreviated form of ______.
Name the longest cell.
Which is the smallest cell?
the question has four options. Choose the correct answer:
Mitochondria were first seen by
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 |
