Question

9. Classify living organisms on the basis of number of cells. Write three examples of each.

Answer 1

here is your answer-

There are many organisms which have one cell and many have trillions of cells. The smallest cell is cell of bacteria mycoplasma of measure 0.1to 0.5 mm and the largest egg cell of ostrich measure 150to 180 mm

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Answer 2

One celled organisms are called unicellular examples are bacteria Paramecium euglena
More than one celled organisms are called multicellular examples are humans dogs butterfly