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प्रश्न
Distinguish between the following pairs of science :
Cell wall and cell membrane
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उत्तर
| Cell wall | Cell membrane |
| (i) It is a non-living rigid layer. | (i) It is a living, thin, flexible membrane. |
| (ii) It is made of cellulose. | (ii) It is made of lipoproteins. |
| (iii) It is freely permeable. | (iii) It is semi-permeable. |
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संबंधित प्रश्न
Complete the crossword with the help of clues given below.
Across
1. This is necessary for photosynthesis.
3. Term for component present in the cytoplasm.
6. The living substance in the cell.
8. Units of inheritance present on the chromosomes.
Down
1. Green plastids.
2. Formed by collection of tissues.
4. It separates the contents of the cell from the surrounding medium.
5. Empty structure in the cytoplasm.
7. A group of cells.
State whether the following statement is true (T) or False (F):
The cell wall is made of protein.
State whether the following statement is true (T) or False (F):
Centrosome occurs in animal cells.
Distinguish between the following pair of terms:
Protoplasm and cytoplasm
Put a tick mark (✓) against the correct alternative in the following statement:
A cell that is spherical in shape is
The cell membrane is called selectively permeable. Why?
State the difference between Nucleus and nucleolus
Write true or false for each statement. Rewrite the false statements correctly:
Chromoplasts are the kitchen of the cell
Write true or false for each statement. Rewrite the false statements correctly:
Vacuoles are filled with a fluid called nucleoplasm
Give two examples of cell organelles.
