Page 41 - Practical handout Lev 1-Pharm D- 2024-2025-with spec

Pharm D Level 1 Medicinal plants (PG 101)

Vascular Bundles

There are 4 types of vascular bundles, collateral, bicollateral,

radial and concentric.

In stem and leaf, there are 2 types, collateral and

bicollateral vascular bundles

1. Collateral V. B. is divided into 2 types :-, open collateral (in Dicot.) and

closed collateral (in Monocot.)

2. Bi collateral V. B. (in Dicot.) only

- 3 In Root there is only one type, radial vascular bundle in both Dicot. and
Monocot. Plants

4- -Concentric (V.B) :may be

(1-Amphivasal (when xylem surrounds phloem
& 2- Amphicribral :when phloem surrounds xylem )

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