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| 1. |
heart wood is more durable than spring wood why |
| Answer» Sapwood\xa0is the outer light-colored portion of a tree trunk through which the water passes from the roots to the leaves, and in which excess food is often stored.\xa0Heartwood\xa0is the central core of the trunk. In most\xa0woods,\xa0the\xa0heartwood\xa0can be distinguished from the\xa0sapwood\xa0by its darker colour. Heartwood\xa0has a much lower starch content, and the hollow cells are filled with extractives that are sometimes toxic to fungi and insects giving it much higher\xa0durability than sapwood.\xa0Sapwood\xa0is much less\xa0durable than heartwood\xa0and often has marginally lower structural properties. | |