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STD 11 - 6. Anatomy flowering plants — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 6. Anatomy flowering plants1 Mark
MCQ
Vascular bundles in dicot stem are
  • A
    Conjoint and collateral
  • B
    Conjoint and closed
  • ✓
    Conjoint, collateral and open
  • D
    Collateral and open
✓

Answer

Correct option: C.
Conjoint, collateral and open
c
(c) Conjoint : A vascular bundle having both xylem and phloem together, is called conjoint. Collateral : A vascular bundle in which the phloem lies towards outer side and xylem towards inner side, is called collateral $e.g.$, Sunflower.

Collateral bundle having a cambium between xylem and phloem is said to be of the open type. $e.g.$, Dicot stem.

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