Respiration in Stems

 The air in case of stem diffuses into the stomata and moves through different parts of the cell to respire. During this stage, the carbon dioxide liberated is also diffused through the stomata.

Each part of the plant such as leaves, stems and roots respires independently by the process of diffusion.

Respiration in leaves occurs through stomata while in roots, it occurs through root hair.

In plants with hard and woody stems and mature roots, the exchange of gases takes place through lenticels. Lenticels are loosely packed dead cells which are present as small pores on the bark of woody plants or old roots. These enable oxygen to reach the intercellular spaces of the interior tissues and carbon dioxide to be released to the atmosphere by the process of diffusion

Warm Regards,
Jessie
Journal Manager
Journal of Bioremediation & Biodegradation