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Question

Monocot stem are characterized by

A
Conjoint, collateral and open vascular bundle
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B
Conjoint, collateral and closed vascular bundle
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C
Radial
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D
Both A and C
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Solution

The correct option is B Conjoint, collateral and closed vascular bundle
  • Anatomy of the monocot stem shows that while the vascular bundles are oval in shape, numerous, and scattered, it is by nature, conjoint, collateral, closed, and endarch without any lysigenous activity.
  • In conjoint vascular bundle xylem and phloem are situated at the same radius.
  • In collateral vascular bundle is a vascular bundle in which a phloem strand is present outside the xylem strand, on the same radius side by side.
  • In closed vascular bundle means that there is an absence of a cambium. They are not capable of forming the secondary xylem and phloem tissues.
Therefore, the correct answer is option B.

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