Explain in short : Chemical communication or hormonal coordination.

Explanation

As nerve impulses does not reach each and every cells of animal body, there is another means of communication between cells.
`rarr` Hormonal coordination achieved by special chemical compounds, called hormones.
`rarr` Hormones are known as chemical coordinators and diffused by those cells which have specific molecules on their surface.
`rarr` Hormonal coordination potentially reach all cells of the body. slower but it can potentially reach all cells of the body.
`rarr` Hormonal coordination is effective in both plants and animals.
`rarr` Compared to electrical impulse it is steady and persistent.