Aerenchyma In hindi / वायूतक

Submitted by Hindi on Fri, 09/03/2010 - 15:01
वायूतक
पानी में तैरने वाले पौधों की पतली भित्ति वाली कोशिकाओं का ऊतक, जिसके बड़े-बड़े अंतराकोशिकीय अवकाशों में हवा भरी रहने के कारण ये पौधे तैरते रहते हैं।

विकिपीडिया से (Meaning from Wikipedia)
Aerenchyma is an air channel in the roots of some plants, which allows exchange of gases between the shoot and the root. The channel of large air-filled cavities provides a low-resistance internal pathway for the exchange of gases such as oxygen and ethylene between the plant above the water and the submerged tissues.

Aerenchyma form in roots subject to anoxia such as what occurs during flooding of plants and soil. For example, Blom et al. (1994) investigated the adaptive responses of plants to flooding along the banks of the Rhine River, which included such morphological changes such as aerenchyma formation.