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Aerenchyma in stem cross section of a typical wetland plant. Aerenchyma or aeriferous parenchyma [1] or lacunae, is a modification of the parenchyma to form a spongy tissue that creates spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. [2]
Parenchyma is a versatile ground tissue that generally constitutes the "filler" tissue in soft parts of plants. It forms, among other things, the cortex (outer region) and pith (central region) of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds.
The term parenchyma is Neo-Latin from the Ancient Greek word παρέγχυμα parenchyma meaning 'visceral flesh', and from παρεγχεῖν parenkhein meaning 'to pour in' from παρα-para-'beside' + ἐν en-'in' + χεῖν khein 'to pour'. [4] Originally, Erasistratus and other anatomists used it for certain human tissues. [5]
The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. [ 5 ] [ 6 ] [ 7 ] Aquatic plants only thrive in water or in soil that is frequently saturated , and are therefore a common component of swamps and marshlands .
Plant-mediated methane flux through plant aerenchyma, shown here, can contribute 30–100% of the total methane flux from wetlands with emergent vegetation. [39] Plant aerenchyma refers to the vessel-like transport tubes within the tissues of certain kinds of plants. Plants with aerenchyma possess porous tissue that allows for direct travel of ...
Here are the first two letters for each word: CH. CO. RI. BU. TA. AL. GL (SPANGRAM) NYT Strands Spangram Answer Today. Today's spangram answer on Sunday, February 16, 2025, is GLUTENFREE.
If you feel it is necessary to add a pronunciation respelling using another convention, then please use the conventions of Wikipedia's pronunciation respelling key. To compare the following IPA symbols with non-IPA American dictionary conventions that may be more familiar, see Pronunciation respelling for English , which lists the pronunciation ...
‘Food and drink-inspired baby names, like all dictionary-word names, are going to be immediately identified with the subject itself, so you have to be careful,” Jennifer Moss, the founder and ...