Cell

Cells is 1/96 to 1/36 cm. These cells could be seen only by microscope due to their small soxe. It has mainly three parts-

      1.  Cell membrance

      2.  Protoplasm

      3.  Nucleus

       

      1. Cell membrance- It is found all around the cell. There are              very holes in it.  Necessary materials enter through these                  holes and unnecessary things come out.

      2. Protoplasm- Inside the cell wall there lies clean and thick                fluid. It is called cytoplasm. This is the main ingredient                    which helps in livlihood and its destruction causes death.

      3. Nucleus- A very thick and spherical portion like an iota                    inside the cytoplasm, is called nucleus. The functions of the              cell are done by it.

      4. Centrosome- There is another spherical iota inside the                      protoplasm apart from nucleus which looks like a spherical              cutter. It is called centosome.

      5. Cytoplasm-Cell is the shape of the bag. Inside it lies thick                and white fluid. It is called cytoplasm. It is a main ingredient            of the live fluid.

                                     KINDS OF CELL

       1. Nervous cells

       2. Muscular cells

       3. Blood cells

       4. Epithelial cells

       5. Connective cells