Which plant tissue is primarily responsible for forming the hard husk of a coconut?
Sclerenchyma
Sclerenchyma is a simple permanent tissue made of dead cells whose walls are heavily thickened with lignin, with little or no intercellular space. It gives hardness and rigidity to plant parts.
The hard, fibrous husk of the coconut (coir fibre) is made of sclerenchyma fibres; sclerenchyma is also found in seed coats, nut shells and around vascular bundles.
Collenchyma (living cells thickened at the corners) gives flexibility to young stems and leaf stalks, parenchyma is soft living tissue for storage and food synthesis, and xylem is a complex tissue that conducts water — none forms the hard husk.
Hence, the answer is Sclerenchyma.
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II. Autotrophic
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