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🔬general biology i review

Phyllotaxy

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Phyllotaxy is the arrangement of leaves on a plant stem. It affects light capture, photosynthesis efficiency, and overall plant health.

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5 Must Know Facts For Your Next Test

  1. There are three main types of phyllotaxy: alternate, opposite, and whorled.
  2. Alternate phyllotaxy means one leaf per node, arranged in a spiral or helical pattern.
  3. Opposite phyllotaxy has two leaves per node, positioned directly across from each other.
  4. Whorled phyllotaxy features three or more leaves per node.
  5. Phyllotaxy impacts how well plants can maximize sunlight exposure for photosynthesis.

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