Transport in plantsHard

Question

Meaningful girdlin (ringing) experiment can not be performed within dugarcane because

Options

A.its phloem is situated interior to xylem
B.its stem surface is covered with waxy coating
C.its vascular bundles are not present in a ring
D.its stem is thin

Solution

In ringing experiment romoval of bark breaks the continuity of epidermis, cortex and phloem. It shows clearly that epidermis, cortex and phloem do not take part in transport of sap or water. In sugarcane (monocot) the vascular bundles are scattered, therefore, ringing experiment is not applicable.

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