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Gunogunshaklii hujayrai rastani

Tamomi uzvhoi rastani az hujayraho iboratand. Pas, rastani sokhti hujayravi dorad va har kadom hujayra juzi nihoyat khurdi tarkibii rastani meboshad. Onho vazifahoi gunoguni fiziologiro ijro menamoyand. Az in ru, hujayraho jihati vazifahoi ijro mekardagiashon va az rui shaklu sokhtashon, andozaashon, metavonand az yakdigar farq kunand

rasmi-magzAz jihati sokhtu shakl hujayrahoi rastanihoi bisyorhujayraro ba du guruh judo kardan mumkin ast: parenkhimi, ki nisbatan lundashakl buda, az rui kutrashon qarib yakkhelaand va prozenkhimi, ki daro- ziashon nisbat ba barashon khele ziyod ast.

Hujayraho az jihati andoza (buzurgi) ham farq mekunand. Odatan andozai onhoro tanho ba tufayli mikroskop muayyan kardan mumkin ast. Vale baze hujayraho chunon kalon meshavand, ki onhoro bo chashmi oddi didan mumkin asg. Masalan, hujayrahoi shiradori magzi mevahoi rastanihoi sitrusi (limu, aflesun va gayraho). Darozii in guna hujayraho 5 mm, barashon 2-3 mm meshavad.

Hujayrahoi parenkhimii magzi mevahoi baze rastaniho, az qabili tarbuz, kharbuza, pomidor, seb va gayraho, hajman khele kalon meshavand. Onhoro tavassuti purbini oddi (dasti) niz didan mumkin ast.

Darozii nakhi lifii bisyor rastanihoi nakhdihanda (zagirpoya, kanab) ba 20-40 mm merasad. Darozii nakhi lifii gazna bazan ba 80 mm, darozii muyakhoi chigiti pakhta, ki az yak hujayra iborat ast, ba 23-31 mm merasad.

Hamin tavr, hujayrahoi rastaniho shaklhoi gunogun dorand. Onho metavonand tukhmshakl, girdashakl, sitorashakl, rishtamonand va gayra boshand. Har yak hujayra jihati andozaash se chenak: darozi, bar va balandi dorad.

Aksari hujayraho, bo vujudi gunogunshakliashon, sokhti monand dorand.

  1. CHaro hujayraho shaklhoi gunogun dorand?
  2. Az rui shaklashon hujayrahoi rastanihoro ba chand guruh judo mekunand?
  3. Hujairahoi andozaashon nisbatan kalon dar kadom rastaniho vomekhurand?
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