Page 51 - Practical handout Lev 1-Pharm D- 2024-2025-with spec

Pharm D Level 1 Medicinal plants (PG 101)

-( V.B) : Radial type with 2-( V.B) : Radial type with
Stele exarch xylem arrangement. exarch xylem arrangement.,
has fewer number ( 4- with numerous
6) number (12-20)

-Pith:- narrow or absent 3-Pith:- well developed

Items Young dicot stem Young dicot root

Stomata and Present Absent
cuticle
Root hairs Absent Present
Exodermis Absent Present

Casperian strips Absent Present
V. B. Open or bicollateral V. B. Radial V. B.

Xylem Endarch Exarch
arrangement
Pith Very wide Very narrow or absent
old dicot root

Old Dicot Root

or (phellem)
or cambium
(phellogen)
helloderm
2 ry phloem
Medullary rays
ascular cambium
2 ry xylem

Items Old dicot stem old dicot root

Lenticels Present Absent

Medullary rays Many and there are no Few and there are
principal ones principle ones

Annual rings Present Absent

Pith Present Absent

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