Internode Elongation of Stem: Growth in height of stem occurs in the intercalary meristems of the internodes. Internodes lengthen both by increases in cell number and (primarily) by cell expansion, the latter resulting in an increase of up to 25 cm or more.
OverviewSpecialized termsStem structureRelation to xenobioticsEconomic importanceSee alsoFurther readingExternal linksA stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, photosynthesis takes place here, stores nutrients, and produces new living tissue. The stem can also be called halm or haulm or culms. The stem is normally divided into nodes and internodes:
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Moving on up – controlling internode growth - New …
Jan 19, 2020 · For instance, many species develop short internodes when vegetative but spectacularly elongate their internodes at flowering, changing … Author: Sarah M. McKim Publish Year: 2020
In stem: Growth and anatomy. …between the nodes are called internodes. The number of leaves that appear at a node depends on the species of plant; one leaf per node is common, but two or more leaves may grow at the nodes of some …
Learning Objective. Identify the main external structures of the shoot system, including the nodes, internodes, leaves, axillary buds, and axillary shoots. Plant stems, whether above or below …
May 30, 2022 · Plant Internodes. By contrast, internodes are the sections of stem between nodes. If the nodes are the crucial “organs” of the plant, the internodes are the blood vessels carrying water, hormones, and food from node …
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3.1: Parts of the stem and primary growth - Biology LibreTexts
Jan 30, 2024 · In most woody flowering plants we can recognize nodes and internodes as the basic parts of the stem (Figure \(\PageIndex{1}\)). The nodes are the places where leaves attach …
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Internode Definition and Examples - Biology Online Dictionary
May 28, 2023 · Internode. (Science: plant biology) The portion of a stem between the level of insertion of two successive leaves or leaf pairs (or branches of an inflorescence). A segment of a …
Jul 27, 2022 · In plants of this type, the primary root, which originates from the radicle, weakens prior to maturity and new, vigorous, adventitious roots arise from stem tissue. Adventitious roots …
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The Growth and Development of Internodes in Helianthus
Abstract. Internodes of Helianthus annuus L were examined at several stages of development in order to determine the pattern of growth and thereby shed light on the cellular changes by which …