1. (b) Commercial fibers like jute and flax are derived from the collenchyma tissue, which provides mechanical support and flexibility to plants. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/

    (b) Commercial fibers like jute and flax are derived from the collenchyma tissue, which provides mechanical support and flexibility to plants.

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-6/

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