Biology : PU-CET (U.G) 2015 Panjab University Entrance Exam With Answers

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15.

Vascular Bundles In Cycas Are :

A: Conjoint, Collateral And Closed

B: Conjoint, Collateral And Open

C: Conjoint, Bicollateral And Open

D: Conjoint, Bicollateral And Closed

The answer is: B

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Explanation

The vascular bundles in Cycas are conjoint, collateral and open.

The xylem is present inside the pith and phloem is present outside, facing the cortex in a conjoint bundle. Collateral vascular bundles can be open or closed depending on the presence or absence of cambium between the xylem and phloem.