<prompt> I-Xylem iyinhlanganisela yezicubu eziyinkimbinkimbi ezinama-tracheids aqhuba amanzi noma izakhi zomkhumbi, kanye nemicu namaseli e-parenchyma. Ama-Tracheids angamaseli amade ane-lignified secondary thickening of the cell walls, akhethekile ekuqhubeni amanzi, futhi aqala ukuvela ezitshalweni ngesikhathi sokudlulela kwawo ezweni esikhathini se-Silurian eminyakeni engaphezu kwezigidi ezingama-425 edlule bheka i-Cooksonia. Ukuba nama-xylem tracheids kuchaza izitshalo eziyinkimbinkimbi noma ama-Tracheophytes. Ama-Tracheids ayizicubu ezicijile, ezinde ze-xylem, ezilula kunazo zonke ezinama-cell walls aqhubekayo kanye nama-lignified secondary wall thickening ngesimo samakheya, ama-hoopes, noma amanethiwekhi e-reticulate. Ama-tracheids ane-valve-like valve-like aligned valve-like valve-like valve-like valve-like valve-like valve-like  <response>: Ama-tracheophytes 