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Question 15 of 22

Q.What is plectostele ? Give one example.

Tamil Nadu DgeTamil Nadu HSC First Year (DGE) Board 2023Subjective· 2mImportance★★★★★
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A plectostele is a protostele whose solid xylem core is split into several flattened, plate-like strands alternating with phloem, exemplified by Lycopodium.

A stele is the central vascular cylinder of a root or stem, consisting of xylem, phloem, pericycle, and (where present) pith. A protostele is the simplest and most primitive type of stele, in which the xylem forms a solid, continuous core at the centre, without any pith, and is directly surrounded by phloem.

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