Question

Outer lighter coloured$/$alburnum region of wood is

• A. Autumn wood
• B. Spring wood
• C. Heart wood
• D. Sapwood

Answer 1

Answer: (D)

Sapwood

A.Autumn wood – small amount of Secondary xylem or wood formed during autumn season is called autumn wood or late wood.

B.Spring wood – large amount of secondary xylem or wood formed during spring season is called spring wood or late wood.

C.Heart wood – the inner or central dark coloured non functional secondary xylem or wood is called Heart wood or duramen.

D.Sap wood – the outer light coloured, functional secondary xylem or wood is called sap wood or alburnum.

So, the correct option is ‘Sap wood’.