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प्रश्न
Write a short answer.
Why is a cell called the structural unit of a living organism?
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उत्तर
A cell is called the structural unit of life because all living organism irrespective of their size, shape, and complexity are made up of cells and functions performed by the organism is the result of the activity of the cells in its body.
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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.
Differences between light microscope and electron microscope.
Which one of the following is found both in the cells of a mango plant and a monkey?
Name the part of the cell concerned with the following:
Hydrolytic in function
Name the scientist who invented the first microscope.
Who coined the term “cell” ?
Match the items in column A with the appropriate items in column B:
| column A | column B |
| 1. Platform or workplace for the synthesis of proteins | a. Golgi complex |
| 2. A powerhouse of cells | b. Ribosomes |
| 3. Help in the formation of cell plate during cell division | c. Chloroplast |
| 4. Site for photosynthesis | d. Mitochondria |
| 5. Control tower of cell | e. Chromosomes |
| 6. A structure bearing genes | f. Nucleus |
Answer the following question.
Who discovered cells, and how?
The instrument used to observe the cell is _____
Who proposed the "Cell theory"?
