Question

what are casparian strips? state their function...

Answer 1

The radial and transverse walls of epidermal cells possess a waxy substance called suberin in the form of bands or strips.

These strips were first observed by Caspary (1865-66) and hence, called Casparian strips.

These strips help endodermis to act as 'water tight' layer out side the vascular strand and stops passive movement of water and minerals.

It also prevents the conducting elements being clogged with air. 

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