Coleorhiza

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coleorhiza

[‚kō·lē·ə′rīz·ə]
(botany)
The sheath surrounding the radicle in monocotyledons.

Coleorhiza

 

a calyptrate sheath that surrounds the primary root, enclosed in the seed of a plant. It performs a protective function. The coleorhiza is characteristic of cereal grains; it is also present in eucalypti. The growing rootlets rupture the seed (caryopsis), causing it to sprout.

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