Page 38 - Practical handout Lev 1-Pharm D- 2024-2025-with spec

Pharm D Level 1 Medicinal plants (PG 101)

Vascular tissues (conducting tissue)

Xylem ( Water conducting tissues ) - it may be Phloem .( Food conducting tissues ) - it may be

Vessels Sieve Tube Companion cell

Short cells with perforated ends connected together to form Series of cells of perforated Living cells narrower than

a continuous tube which Lignified to prevent collapsing of ends to form a tube, There are sieve tube ,
vessels. & conducting water through perforated ends They may sieve plates that may be simple or One or several numbers

be:- compound, The protoplasm of associated to sieve tube ,

a-Protoxylem (narrow) (annular - spiral) adjacent cells are connected Nucleus present

b-Metaxylem(wide) as (reticulate - bordered pitted) through cytoplasmic strands

penetrating sieve pores for

conduction of food , No nucleus

Spiral Annular

vessels
vessels

Reticulate Bordered T.S

vessels pitted

vessels

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