Other means for transport of substances in animals
What is the other means for transport of substances in animals devoid of a circulatory system? Why is blood significant for bigger animals?
Expert
The animals which do not have the circulatory system, transportation of substances takes place by cell to cell diffusion.
The blood is a basic means of substance transport for bigger animals as in such animals there are tissues distant from one other and from the atmosphere therefore making diffusion not possible.
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