How do organisms vary in cell number, shape and size? Write a note.
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Explanation:
A unicellular organism differs in shape from another unicellular organism. Within a multicellular organism, there are a variety of cells. Some are long while others are short; some are circular while some are oval. Shape and size vary from cell to cell according to their functions and composition.
Number of Cells :
Cells are the lowest level of organization in every life form. From organism to organism, the count of the cell may vary. Humans have the number of cells than bacteria. If an organism is made up of a single cell, it is called a unicellular organism(uni: one; cellular: cell). Whereas, the organisms which are made up of more than one cell are called multicellular organisms (multi: many; cellular: cell). Among the multicellular organisms, the count of the cell varies. Some might have billions of cells while others have trillions (like the human). But every organism starts their life from a single cell which further divides into thousands and millions.
Sizes and Shapes :
Living organisms are made up of different types of cells, of different shapes and sizes. A unicellular organism differs in shape from another unicellular organism. Within a multicellular organism, there are a variety of cells. Some are long while others are short; some are circular while some are oval. Shape and size vary from cell to cell according to their functions and composition. For example, a nerve cell is long and branched, meant for the transmission of signals throughout our body while a muscle cell is small and spindle-shaped which helps in movement.
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organisms show variety in cell number shape and size 10 points
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