(i) Differences between early wood and late wood:
S. No. |
Early Wood |
Late Wood |
(i) |
It is produced during the favourable period of the year. |
It is formed towards the close of the active growing period of the year just before the arrival of unfavourable period |
(ii) |
Early wood constitutes the major part of the annual ring. |
Late wood forms a narrow strip in the annual ring. |
(iii) |
The wood is lighter in colour. |
The wood is darker. |
(iv) |
It has lower density. |
It has higher density. |
(ii) Difference between heartwood and sapwood.
S. No. |
Heartwood |
Sapwood |
(i) |
It is the central wood of an old stem. |
It is outer wood of an old stem. |
(ii) |
Heartwood is dark coloured. |
It is light coloured. |
(iii) |
Living cells are absent. |
Living cells are Present. |
(iv) |
Tracheary elements have deposition of tannins, resins, gums etc. |
Tracheary elements do not possess any deposition in their lumen. |