Faoliyati hamai uzvhoi rastanihoi guldor ba hamdigar zich aloqamand meboshad. Masalan, dar barghoi sabz agar obro reshaho jabbida dastrasi bargi rastaniho nagardonand, fotosintez guzashta nametavonad. Be moddahoi madanie, ki onhoro reshaho jabbida megi- rand moddahoi organikii murakkab, khususan safedaho nametavo- nand hosil shavand. Dar navbati khud reshaho ham nametavonand nagz …

YAk qismi muayyani (mikdori barziyodi) moddahoi organiki qand, ohar, safeda, ravgan dar boftaho va uzvhoi makhsus gun va zakhira meshavad. Masalan, ohar — moddai zakhiravii az hama mamultarin meboshad. Ohar dar rastaniho, khususan dar hujay- rahoi berangi boftai zakhiravi dar namudi donachaho gun meshavad (lundai kartoshka). Gunshavi yo zakhirashavii ohar …

Moddahoe, ki dar natijai in yo on hodisa (ravand) hosil shuda- and, dar yak joy qaror namegirand. Onho pesh az hama dar dokhili (tavassuti) hujayra harakat karda, az yak juzi (organoisi) hujay- ra ba digarash, az sitoplazma ba plastid va yo ba jonibi qismhoi darsabzishbudai jildi hujayra (masalan, hangomi hosil …

Hujayratukhmi bordorshuda (zigota) ba du hujayra taqsim meshavad. Har kadome az in hujayraho dar navbati khud taqsim megardad va gayra. Dar natijai borho taqsim shudani hujayra janini bisyorhujayrai rastanii nav tashakkul meyobad. Az hujayrai kalontarini markazii khaltai janin, ki bo nutfai duyum omekhta shudaast, hujayrai endosperm, ki dar on moddahoi …

Hamai rastaniho sokhti hujayragi dorand va onho bo hamdigar aloqamandand. Az in jost, ki vayronshavii sokht va faoliyati hayotii yak uzv ba faoliyati hayotii digar uzv betasir nameboshad. SHumo aknun ba bisyor khususiyathoi muhimi dokhili va berunii rastanihoi guldor va ba vazifayu khosiyathoi uzvho va boftahoe, ki dar ravandhoi gunoguni …

A.gar rastaniho az muhiti beruna moddahoi baroi onho zaruriro muntazam qabul nakunand zindagi karda nametavonand. Organizme, ki gizo namegirad, nafas namekashad oqibat nobud meshavad. Dar navbati khud, dar ravandi faoliyati hayotiash rastani baze moddahoro ba muhiti beruna khorij mekunad: oksigenro dar natijai fotosintez; gazi karbonatro dar vakti nafaskashi; obi barziyodro …

Rastanihoi guldor odatan meva hosil mekunand. Vale baroi hosil shudani meva gardoludshavii gul sharti zaruri meboshad. Dar vaqti gardoludshavi gard az gardbarg ba gardgiraki tukhmdon ovarda meshavad. Burdani gard az gardbargi yak gul ba gardgiraki tukhmdoni guli digar gardoludshavii dutarafa nomida meshavad. Aknun savole paydo meshavad, ki gard chi tavr …

Gardoludkunii suni  gardolud kardani gul dar natijai faoliyati maqsadnoki odamon surat megirad. Odamon gardi garddo- ni yak gulro ba gardgiraki tukhmdoni guli digar ovarda, hosili ras- tanihoi kishovarziro ziyod mekunand va yo navhoi nav ba navi rastanihoro ba vujud meovarand. Baroi in dar davrai pesh az gulshukuft gardbarghoi gulro kanda …