<prompt> Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu: Kupfuura: Xylem ivhu rakaoma remidziyo rinoumbwa nemvura-inofambisa tracheids kana zvinhu zvengarava, pamwe chete nemafiber nemasero eparenchyma. Tracheids ndiwo masero akareba ane lignified yechipiri mukobvu yemadziro emasero, akasarudzika ekufambisa mvura, uye akatanga kuoneka muzvirimwa panguva yekuchinja kwavo kuenda kunyika munguva yeSilurian makore anopfuura mamirioni 425 apfuura ona Cooksonia. Kuva ne xylem tracheids kunotsanangura zvirimwa zvine tsinga kana kuti Tracheophytes. Tracheids dzakapinza, dzakatambanudzwa xylem masero, ayo ari nyore kwazvo ane masvingo etsero okutanga anopfuurira uye lignified yechipiri masvingo thickenings muchimiro chemhete, hoops, kana reticulate network. Tracheids yakaoma kunzwisisa ine mavharuvhu akafanana nemakomba anonzi makomba akapoteredzwa anoratidzira gymnosperms. Maperns nemamwe mapteridophytes nema gymnosperms ane xylem tracheids chete, nepo zvinomera zvinotumbuka zvinewo midziyo ye xylem. Zvinhu zvomumudziyo zvemasero e xylem asina chinhu asina madziro kumagumo ayo akaenzana kubva kumagumo kusvika kumagumo kuitira kuti aumbe machubhu marefu anoenderera mberi. Mabryophytes haana xylem chaiyo, asi ma sporophytes awo ane tsinga inoitisa mvura inozivikanwa sehydrome iyo inoumbwa nemasero akareba akavakwa zviri nyore. Mubvunzo: Fiber, parenchyma cell uye ndedzipi dzimwe tsinga dzinoumba Xylem?  <response>: Tracheids 