apical meristem

American  

noun

1. meristem at the apex of a root or shoot.

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apical meristem Scientific  

1. A meristem at the tip of a plant shoot or root that produces auxin and causes the shoot or root to increase in length. Growth that originates in the apical meristem is called primary growth. In vascular plants, the apical meristem produces three kinds of primary meristems: the protoderm, ground meristem, and procambium. These in turn produce primary tissues.

2. See more at meristem

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Example Sentences

BBM encodes a transcription factor that regulates embryonic development, while WUS encodes a transcription factor that maintains stem cell identity in the shoot apical meristem region.

From Science Daily

Just in front of it lies the polychate worm version of the apical meristem in plants: a place where stem cells continuously generate new body parts called the posterior growth zone.

From Scientific American

Over time, weather or other things damage the apical meristem, limiting a tree’s height.

From New York Times

The trees grow up and out: Up, with a cell-generating region called the apical meristem, and out, with the vascular cambium.

From New York Times

The day she curled her apical meristem around my finger, I knew she knew me.

From Nature