What is air chamber botany?

The aerenchyma or aerophilic parenchyma or lagoons, 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, allowing gas exchange between the shoot and the root. In plants, the substomatal cavity is the cavity located immediately proximal to the stoma. It acts as a diffusion chamber connected to intercellular air spaces and allows the rapid diffusion of carbon dioxide and other gases (such as plant pheromones) into and out of plant cells. Spongy plant tissue composed largely of air spaces that allow the exchange of gases by diffusion in the underground roots of mangroves.

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