A) xylem fibres
B) phloem fibres
C) sclerenchyma fibres
D) cortical fibres
Correct Answer: B
Solution :
Phloem fibres are found both in primary and secondary phloem. Their secondary wall is thickened with simple or partially bordered pits. They provide protection and mechanical strength. They are distinctly seen in jute, flex and coconut. These fibres are useful in preparing ropes, coarse cloth, etc.
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