The mechanical support to stem is provided by which wood
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I think it should be from forest wood
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Answer:
The mechanical support to stem is provided by Heart wood.
Explanation:
- When the tree becomes old,then major of secondary xylem gets brown.
- It is due to the deposition of organic compound like resins,tannins,gums,oils,essential oil in theinnermost layer and aromatic substances.
- These substances make it firm,hard,tough long durable and provide resistant from attack of the moicroorganism and insects.
- This region is known as heartwood which compromises dead elements and highly lignified walls.
- So,heartwood provides mechanical support to plants.
- Sapwood conducts water for the plant and minerals from root to leaf.
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