Search results
In botany, phyllotaxis (from Ancient Greek φύλλον (phúllon) 'leaf', and τάξις (táxis) 'arrangement') or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature.
In this article, we propose to discuss about the phyllotaxy (arrangement of leaves). The mode of arrangement of leaves are of two types. They are: (1) Cyclic Phyllotaxy and (2) Spiral or Alternate or Acyclic Phyllotaxy.
Oct 31, 2023 · The arrangement of leaves on a stem is known as phyllotaxy. The number and placement of a plant’s leaves will vary depending on the species, with each species exhibiting a characteristic leaf arrangement. Leaves are classified as either alternate, spiral, opposite, or whorled.
Spore – bearing leaves of pteridophytes, gymnosperms and angiosperms. 2. Phyllotaxy: The arrangement of leaves on the stem (Fig. 68) is called phyllotaxy. It is following three different categories: i. Alternate: When only one leaf develops at each node, e.g., Brassica campestris, Nicotiana tabacum. It is following types:
phyllotaxis (also, phyllotaxy) [ fil-uh–TAK-sis ] noun: the manner in which leaves are arranged with regard to the axis and in relation to one another; the study of the factors that determine the growth patterns and arrangements of plant leaves
The arrangement of leaves on a stem, known as phyllotaxy, enables maximum exposure to sunlight. Each plant species has a characteristic leaf arrangement and form. The pattern of leaf arrangement may be alternate, opposite, or spiral, while leaf form may be simple or compound.
Phyllotaxis, the regular arrangement of leaves or flowers around a plant stem, is an example of developmental pattern formation and organogenesis. Phyllotaxis is characterized by the divergence angles between the organs, the most common angle being 137.5°, the golden angle.
Sep 11, 2017 · Leaves and flowers are arranged in regular patterns around the stem of a plant, a phenomenon known as phyllotaxis. Different arrangements occur, such as distichous, decussate or spiral ( Figure 1 ).
Dec 17, 2021 · The arrangement of leaves on a stem is known as phyllotaxy. The number and placement of a plant’s leaves will vary depending on the species, with each species exhibiting a characteristic leaf arrangement. Leaves are classified as either alternate, spiral, opposite, or whorled.
Jan 1, 2016 · In many plants, the leaves may not alternate in 180° but they may be arranged in any other determined pattern. This pattern is called phyllotaxy. If the leaves are opposite to each other, the phyllotaxy is 1/2. A common phyllotactic index is 2/5 (144°).
