Question

Presence of bicollateral vascular bundle provides evidence that conduction of food takes place through the

• A. Phloem
• B. Xylem
• C. Both A and B
• D. None of the above

Answer 1

Answer: (A)

Phloem

Translocation of prepared food occurs through the phloem. Bicollateral vascular bundles have two patches of phloem. Bicollateral vascular bundles show following arrangement of vascular tissue, outer phloem, outer cambium, xylem, inner cambium, inner phloem. These vascular bundles can transport much more amount of sugars than collateral vascular bundles having only a single patch of phloem. Bicollateral vascular bundles are common in Family Cucurbitaceae with large leaves, large fruits called Pepo and thin weak stems.