Describe the protostele in pteridophytes.

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Solution

Protostele:
Protostele is a non-medullated stele that comprises a central core of the xylem surrounded by a cluster of phloem.
There is a multiple of a single layer of pericycle towards the exterior of the phloem which is externally delimited by a sheath of endodermis continuous in nature.
Types of protostele can be haplostele, plectostele, actinostele and mixed protostele.

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