Select the mismatched pair

Options

A. collateral and open vascular bundles- sunflower stem
B. Bicollateral vascular bundles-Maize stem
C. Concentric vascular bundles -ferns
D. Radial vascualr bundles -maize root

Answer

B

Explanation

Bicollateral vascular bundles have phloem both on the outer and inner side of xylem. All the three lie on the same radiau usually a strip of vascular cambium is present on both outer and inner sides of xylem. Bicollateral vascular bundles occur in cucurbitaceae (e.g., pumpkin or cucurbita pepo, Ridge gourd or Luffa cyliderica) and some members of families solanaceae, Convolvulaceae, etc.