Question : What is " bundle cap " or " hard bast"?

1.	Question : What is " bundle cap " or " hard bast"?
Answer» SOLUTION :In the stem of sunflower (Helianthus), a few layers of SCLERENCHYMA cell occur in patches OUTSIDE the phloem in each vascular bundle. This PATCH of sclerenchyma cell is called Bundle cap or HARDBAST.

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