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प्रश्न
Cell is the basic unit of life. Discuss in brief.
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उत्तर
- The cell is the basic structural and functional building block of all life since, without cells, there could be no living thing. Every life starts off as a single cell.Either a single cell (unicellular) or several cells (multicellular) make up an organism.
- While each group of cells in a multicellular creature is specialised for a particular function, a single cell in a unicellular organism is capable of autonomous existence and may carry out all necessary life processes.
- Cells are the units of life that divide to create new ones, and these cells always come from the division of pre-existing ones.
- Due to the totipotency of cells, a single cell can develop into an entire creature. A cell is the fundamental building block of life since the actions of an organism are the culmination of the activities of its cells.
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संबंधित प्रश्न
Indicate whether the following statements are True (T) or False (F).
Amoeba has irregular shape. (T / F)
A cell is the smallest unit of life.
Basis unit of life.
I convert the Sun’s energy into food for the plant. Who am I?______
Adipose: tissue:: eye: ______.
______ cells are specialised cells that can be transformed into any kind of cells.
In Latin, the word ‘cellula’ means a ______.
All the cells can be seen with our naked eye.
Name the largest Angiosperm cell
Which of the following can be made into crystal?
Cell wall of which one of these is not made up of cellulose?
A person takes concentrated solution of salt, after sometime, he starts vomiting. What is the phenomenon responsible for such situation? Explain.
We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals, and water. After digestion, these are absorbed in the form of glucose, aminoacids, fatty acids, glycerol etc. What mechanisms are involved in absorption of digested food and water?
Name the organelles which show the analogy written as under
Transporting channels of the cell——
Name the organelles which show the analogy written as under
Packaging and dispatching unit of the cell——
Identify the statement which is true for cells.
Fill in the blanks with the terms given in the box below:
| Nucleus, chromosomes, cell wall, cell membrane, protoplasm, cytoplasm, ribosome, cell organelles |
The outermost layer of plant cells is the ___(a)___ beneath which is the ___(b)___. The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___. The ___(e)___ contains thread-like structures called ___(f)___.
Define the following term:
Cell
