On the basis of variation in form, structure, origin and development, sclerenchyma may be
Fibres
Sclereids
Either $(a)$ or $(b)$
Both $(a)$ and $(b)$
In monocotyledons, they do not form secondary phloem and xylem why?
Plant fibres can originate from
Stomata in grass leaf are
The cells without nuclei are present in
In the given figure, which component has thin outer walls and highly thickened inner walls?