1.

Differentiate the following 1. Bark & Periderm 2. Heartwood &Sapwood 3. Endarch & Exarch

Answer»

1. Bark – It is the tissue outside vascular cambium. 

Periderm – It is the outer protective tissue It includes phellem, phellogen, and phelloderm. 

2. Heartwood – It is the dark coloured, nonfunctional central part of wood resistant to the attack of microorganisms. 

Sap wood – It is the light coloured, functional and peripheral part of wood.

3. Endarch – It is the arrangement of xylem in which protoxylem facing towards centre and metaxylem towards the periphery, eg. stem. 

Exarch – It is the arrangement of xylem in which Metaxylem facing towards centre and protoxylem towards periphery.eg: Root.



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