Question

in single celled organisms diffusion is sufficient To meet all their requirements of food exchange of gases or removal of wastes but it is not in case of multuicellular organism explain

Answer 1

because diffision is a slow process and it will take too much time to reach all parts of large body of multicllular organisms.

Answer 2

HEYMATE!!!!

■ In multi - cellular organisms, all the cells may not be in direct contact with the surrounding environment.

■thus,simple diffusion will not meet the requirements of all the cells.

■In case of a single - celled organism, no specific organs for taking in food, exchange of gases or removal of wastes may be needed because the entire surface of the organism is in contact with the surrounding environment.

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