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Plants: Parts and Functions
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What is the outer hard covering of a tree that protects it?
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A
Bark
💡 Explanation:
The trunk, branches and twigs of the tree are covered with bark. The outer bark, which originates from phloem cells that have worn out, died and been shed outward, acts as a suit of armor against the world by protecting the tree from insects, disease, storms and extreme temperatures. In certain species, the outer bark also protects the tree from fire.