TYPES OF WOOD

VASCULAR CAMBIUM

• A type of meristem, lateral meristem to be precise (on the basis of its position). Vascular cambium is made up of actively dividing cells and is responsible for the formation of Secondary vascular tissues i.e. Secondary xylem and Secondary phloem.

• Vascular cambium forms Secondary xylem towards the inner side which is commonly referred as Wood.

TYPES OF WOOD

1. Spring wood and Autumn wood/ Early wood and Late wood.

2. Sap wood and Heart wood/ Alburnum and Duramen.

3. Softwood and Hardwood / Porous and Non-porous wood.

DIFFERENCES

1) Spring wood and Autumn wood

NOTE:-

• Spring wood and Autumn wood rings are not distinct in trees growing in Tropical regions due to almost constant climatic conditions throughout the year.

• Spring wood and Autumn wood is absent in roots.

• One ring of Spring wood + One ring of Autumn wood= One Annual ring.

• Dendrochronology- Estimating age of trees by counting the number of annual rings.

2) Sap wood and Heart wood

3) Softwood and Hardwood

End of the article.

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