Aerenchyma
Aerenchyma
Aerenchyma (pronunciation: /ɛrɛŋˈkaɪmə/) is a type of tissue found in plants, particularly in aquatic species or those that grow in environments with poor soil aeration.
Etymology
The term 'aerenchyma' is derived from the Greek words 'aer' meaning air and 'enchyma' meaning infusion.
Definition
Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. The main function of aerenchyma is to promote the circulation of gases, including oxygen, which is necessary for cellular respiration.
Types of Aerenchyma
There are two types of aerenchyma:
- Lysigenous Aerenchyma: This type of aerenchyma is formed by the breakdown of pre-existing cells.
- Schizogenous Aerenchyma: This type of aerenchyma is formed by cell separation without the breakdown of the cell wall.
Related Terms
- Cellular Respiration: The process by which cells use oxygen to break down glucose and create energy.
- Aquatic Plants: Plants that have adapted to living in aquatic environments.
- Soil Aeration: The process by which air is circulated through, mixed with or dissolved in soil.
See Also
External links
- Medical encyclopedia article on Aerenchyma
- Wikipedia's article - Aerenchyma
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