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Root cap

Tissue at the tip of a plant root

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The purpose of the root cap is to enable downward growth of the root, with the root cap covering the sensitive tissue in the root. Thanks to the presence of statocytes, the root cap enables geoperception or gravitropism. This allows the plant to grow downwards (with gravity) or upwards (against gravity).

The root cap is absent in some parasitic plants and some aquatic plants, in which a sac-like structure called the root pocket may form instead.

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