alleryStart learning →Which pair of cells makes up sclerenchyma?
AFibres and tracheids
BSclereids and sieve cells
CSclereids and guard cells
DFibres and sclereids
Answer & Solution
Correct answer: D. Fibres and sclereids
1. Sclerenchyma provides support and comes in two cell types.
2. Those two are fibres, which are long and slender, and sclereids, which are smaller.
3. Both carry secondary walls thickened with lignin, the organic compound that is a key component of wood.
4. Sclereids give pears their gritty texture, while fibres are spun into linen and rope.
5. Tracheids, sieve cells and guard cells belong to xylem, phloem and the epidermis respectively.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 30 "Plant Form and Physiology", section 30.2 Stems_
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