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Question

When a meristematic tissue "cambium" is present inside a vascular bundle, the bundle is said to be

A
Conjoint
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B
Open
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C
Closed
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D
Collateral
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Solution

The correct option is B Open
  • The vascular bundles of dicot plants have a layer of meristematic tissue called cambium present inside them and these cells can divide, causing an increase in size. Hence they are called Open bundles.
  • Monocot vascular bundles do not possess cambium and hence no growth occurs. Hence they are called Closed bundles.
  • In collateral vascular bundles xylem remains towards the inner side and phloem towards the outer side.
  • In Conjoint vascular bundles , xylem and phloem tissues are present on the same radius.
  • Thus, option B is correct.

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