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| 1. |
Difference between spring wood and autumn wood |
| Answer» During spring,cambium is more active nd produce xylem vessels with wide lumens hence more water is transported.This wood is lighter in colour nd less denser.Autumn wood is formed during winter season.During winter cambium is less active and produce few number of xylem vessels with narrow lumen hence much water can\'t be trasported.This wood in darker nd is more dense.These two types of woods are formed as alternate concentric rings every year hence called as annual rings.one spring woodring+one autumwood ring=annual ring.By counting number of annual rings we can estimate the age of trees. | |