Conducting Cells in Xylem Are

Question

Conducting cells in xylem are
A) tracheids.
B) vessel elements.
C) tracheids and vessel elements.
D) tracheids and sieve tube elements.
E) sieve tube elements.

Accepted Answer

Conducting cells in xylem are mainly two types: tracheids and vessel elements. Tracheids are elongated, tube-like cells with tapered ends and walls containing pits. Vessel elements are wider and shorter cells with a perforated end wall (perforation plate) which allows for more efficient water flow. Both tracheids and vessel elements conduct water and minerals upwards in the plant. Therefore, the best choice is C as it includes both tracheids and vessel elements.