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(Q.74) Why is the process of
simple diffusion sufficient for taking in food, exchange of gases and removal
of waste in unicellular organism but not sufficient in multicellular
organism?
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(Ans) The process of simple diffusion
is sufficient to carry different activities of life in unicellular organisms as
in them, the entire surface of the organism is in contact of the environment.
In case of multicellular organisms all the cells are not in direct contact of the environment so simple diffusion will not work.
In case of multicellular organisms all the cells are not in direct contact of the environment so simple diffusion will not work.
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