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 • May 1, 2024

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 • Aug. 8, 2021

Primary growth of stems is the result of the division and elongation of cells produced in the apical meristem.

From Textbooks • Jan. 1, 2018

Four major adaptations are found in all terrestrial plants: the alternation of generations, a sporangium in which the spores are formed, a gametangium that produces haploid cells, and apical meristem tissue in roots and shoots.

From Textbooks • Jan. 1, 2015

Figure 14.5 This apple seedling is an example of a plant in which the apical meristem gives rise to new shoots and root growth.

From Textbooks • Apr. 25, 2013