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प्रश्न
Why is the cell called the structural and functional unit of life?
उत्तर
- The building blocks of all living things are cells. The structural unit of life is therefore the cell.
- Because of the particular arrangement of its membrane and cytoplasmic organelles, every cell has its own unique structure and function.
- Cells with this kind of organization are able to carry out essential processes like breathing, getting nutrients, getting rid of waste, making new proteins, etc. Thus, the fundamental functioning unit of living things is the cell.
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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.
What would have happened? If.........
There had been no differences between mitochondria and plastids.
What would have happened? If.........
Plants lacked anthocyanin.
Give functions.
Plasma membrane
Who gives me the colour? (Select the correct option)
| a. Red tomato | 1. Chlorophyll |
| b. Green leaf | 2. Carotene |
| c. Carrot | 3. Anthocyanin |
| d. Violet | 4. Lycopene |
How many chromosome pairs are found in human cells?
Fill in the blanks :
_______ are hereditary units.
Distinguish between the following pairs of terms :
Protoplasm and cytoplasm
Name the plastid and pigment likely to be found in the cells of :
State the major function of the following :
Mitochondria:
