Explain+internal+structure+of+carol+led+roots
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CORALLOID ROOTS
The structure is similar to that of primary root. In addition there is a conspicuous broad blue green zone in middle cortex. This is the algal zone. It lies midway between the vascular bundle and epiblemma. The cortical cells in this region get disorganized and are inhibited by blue green algae such as Nostoc and Anabaena.
In coralloid root the cortex is divided into three zones;Outer cortex, Middle cortex and Inner cortex.
The stele is diarch, triarch or tetrarch and surrounded by an endodermis which is followed by pericycle.
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