Coconut husk fibres contain sclerenchyma with thick lignified walls, making them hard and brittle. Coriander leaf stalks contain collenchyma with unevenly thickened walls and pectin, providing softness, flexibility and support without breaking during bending or movement.
You may have noticed that fibres of coconut husk are hard and brittle, whereas the leaf stalks of coriander are soft and flexible. Find out the reason.
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Coconut husk fibres are hard and brittle because they mainly contain sclerenchyma tissue with thick lignified cell walls that provide strength and rigidity. In contrast, coriander leaf stalks contain collenchyma tissue with pectin-rich uneven walls. This tissue gives flexibility and support, allowing the stalks to bend easily without breaking during movement or external pressure.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-3/