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  • Bordered pits are seen inOption: 1 Libriform fibresOption: 2 Fibre tracheids<

Bordered pits are seen in

Option: 1

Libriform fibres


Option: 2

Fibre tracheids


Option: 3

Both a and b


Option: 4

None of these


Answers (1)

best_answer
 

 

Fibres can be classified on the basis of their position in plant body as follows:

  1. Intraxylary fibres: present in xylem (wood).
  2. Extraxylary fibres: present outside xylem, that is, in phloem.

Intraxylary Fibres: these are of following types:

  • Libriform fibres: Thick walled wood fibres having simple pits.
  • Fibre Tracheids:  Thin walled wood-fibres having bordered pits

Extraxylary Fibres: these have simple pits and are of following types:

  • Cortical fibres: these are present in cortex
  • Perivascular fibres: these are present in the periphery of vascular bundles
  • Phloic fibres: these are present in the phloem

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Fibre Tracheids are thin walled wood-fibres having bordered pits.

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Sayak

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