Tyloses are tracheal plugs found in heart wood, due to which the heart wood becomes non-functional. These are balloon-like swellings of xylem parenchyma cells in the lumen of vessels.



NEET UG 2016 Question - The balloon shaped structures called tyloses?

a. Originate in the lumen of vessels

b. Characterize the sapwood



c. Are extensions of xylem parenchyma cells into vessels



d. Are linked to the ascent of sap through xylem vessels





Correct answer - (c) Are extensions of xylem parenchyma cells into vessels