Question

write a note on types of steles in pteridophytes​

Answer 1

Answer:

stele is to the central cylinder of vascular tissues consisting of xylem, phloem, pericycle.

it has two types:

 Protostele  , phloem surrounds xylem

  Siphonostele

xylem is surrounded by phloem with pith at the centre

hope this helps a bit :)