Advertisements
Advertisements
प्रश्न
Cell is the basic unit of life. Discuss in brief.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Which of the following is not correct?
Indicate whether the following statements are True (T) or False (F).
Unicellular organisms have one-celled body. (T / F)
Indicate whether the following statements are True (T) or False (F).
Amoeba has irregular shape. (T / F)
Adipose: tissue:: eye: ______.
Assertion (A): Majority of cells cannot be seen directly with naked eye because.
Reason (R): Cells are microscopic.
On the lines given below, write about what you have learned from the activities done in this lesson.
Let me tell you about some of the important things I’ve learned about cells. First, I’ll start with…______
______ is the basic structural and functional unit of every living organism.
In Latin, the word ‘cellula’ means a ______.
The branch of science that deals with the study of cells is called ______.
All the cells can be seen with our naked eye.
Cell arises from pre-existing cell was stated by
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
Power house of the cell——
Name the organelles which show the analogy written as under
Packaging and dispatching unit of the cell——
The table given below has certain terms and four blank spaces named A, B, C and D.
| Cell | Feature/part | Function |
| Amoeba | A | Movement |
| Plant Cell | Plastid | B |
| C | Spindle shaped | Contraction |
| Nerve Cell | D | Stimuli and response |
From the options given below choose the correct combination of terms.
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)___.
The smallest cell in the human body is ______.
Stem cells can serve as an inbuilt repair system for our body.
