different types of vascular bundles found in angiospermic plants with examples

Dear student
Different types of vascular bundles found in angiospermic plants are:
1. Radial vascular bundle: the xylem and phloem are arranged separately in different radius. For example,  roots of monocots and dicots have radial vascular bundle. 
2. Amphivasal vascular bundle: also known as leptocentric vascular bundle. In this type, xylem is found outside and phloem is found inside. For example, Yucca. 
3. Amphicribal vascular bundle: also known as hydrocentric. In this type, phloem is found outside and xylem is found inside. For example, Pteris.
4. Collateral vascular bundle: xylem and phloem are found side by side on the same radius. For example, dicot stem and monocot stem
5. Bicollateral vascular bundle: where the xylem is situated in the middle of two phloem strands. For example, stem of Cucurbita. 

Regards
 

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