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प्रश्न
Cells consist of many organelles, yet we do not call any of these organelles as structural and functional unit of living organisms. Explain.
उत्तर
The cell organelles like mitochondria, Golgi complex, ribosomes, nucleus, etc., have specific functions and carry out specific functions in a cell but they cannot be called as the structural and functional units of living organisms.
This is because they can function only when present inside a living cell. They cannot act as independent units. The CEI, on the contrary has independent existence. It is the smallest, structural and functional unit of life.
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संबंधित प्रश्न
The unit of measurement used for expressing dimension (size) of cell is ____
The largest cell is egg of an _______.
The size of the cells is measured in units of ______
What is cell differentiation?
The approximate number of cells in the human body is ______.
What are the consequences of the following conditions?
- A cell containing higher water concentration than the surrounding medium
- A cell having low water concentration than the surrounding medium.
- A cell having equal water concentration to its surrounding medium.
Read the different combinations of terms given below :
The correct combination of terms with reference to an animal cell is ______.
Under a microscope Paheli observes a cell that has a cell wall but no distinct nucleus. The cell that she observes is
Classify the following terms into cells, tissues and organs and write in the tabular column given below.
| RBC | WBC | Nerve Cell | blood | muscle | blood vessels | brain | heart | hand |
| Cell | Tissue | Organ |
| ______ | ______ | ______ |
| ______ | ______ | ______ |
| ______ | ______ | ______ |
______ is the largest isolated single cell.
