Answer :
Final answer:
Oak, Walnut, and Pine are all hardwoods produced by angiosperms, making the statement true.
Explanation:
True, Oak, Walnut, and Pine are all hardwoods as they are produced by angiosperms and contain vessel elements and tracheids. In contrast, conifer trees like pine produce softwoods consisting of tracheids only. Pine trees, although conifers, are often used extensively by humans and their seeds are harvested for their nutritional value.
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