14. What are the cell types
that form the phloem? What
are the main features of those
cells?

Gap-fill exercise

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The main cells that the phloem are
the elements and the companion
. The sieve elements form
vessel walls; they are enucleated
cells positioned in forming the
sieve tubes. successive vessel
elements there communicating
pores. The companion are located
outside and the sieve tubes
and help in the absorption the
material to be .