Additional Vascular Tissue Produced as Secondary Growth in a Root

Question

Additional vascular tissue produced as secondary growth in a root originates from which cells?
A) vascular cambium
B) apical meristem
C) endodermis
D) phloem
E) xylem

Accepted Answer

Vascular tissue produced as secondary growth in a root originates from the vascular cambium, which is a lateral meristem responsible for producing secondary xylem and phloem. The apical meristem is responsible for primary growth, and the endodermis is a specialized layer of cells that controls the movement of water and solutes into the root. Phloem and xylem are types of vascular tissue, but they are not responsible for producing additional tissue as secondary growth.