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प्रश्न
the question has four options. Choose the correct answer:
Cell theory states
विकल्प
all cells have a nucleus
all cells are living
cell reproduces by mitosis and meiosis
cells are functional and structural unit of plants and animals
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उत्तर
cells are functional and structural unit of plants and animals
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.
Explain why chloroplasts are found only in plant cells?
Write a short answer.
Why is a cell called the structural unit of a living organism?
What is the function of the following?
Cell membrane
Fill in the blank with a suitable word:
The single-celled alga ______ measures 10 cm in length.
Fill in the blank with a suitable word:
DNA is an abbreviated form of ______.
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 |
Name the longest cell.
Nerve cell is the longest cell
