Ahamiyati on baroi hayoti rastaniho. Muhofizati khok: Reshai darakhton sabzida, ba qabathoi chuquri khok shokha ronda, gafs meshavad va tanai khele vazninu bohashamati shokhahoi serbargro mustahkam nigoh medorad. Albatta, na hamai rastaniho monandi darakhtoni azimjussa reshai ustuvoru shokharonda dorand. Reshai rastanihoi alafii yaksola nisbatan khurd buda, ba zamin chuqur namedaroyad. Tamomi …

Resha dar hayoti rastaniho ahamiyati avvalindaraja dorad. Rastaniho ba vositai reshaashon dar khok ustuvor joygir shuda, az on ob va moddahoi madanii baroi hayotashon zaruriro megirand. Baroi isboti in guftaho tajribahoi gunogun kumak merasonand. Agar yagon rastanii dar reg yo arramaydai namnok parvarish kardashudaro girifta, bo reshaash ba dokhili probirka …

CHi tavre ki shumo allakay medoned, ob va moddahoi madaniro rastani az khok ba tufayli muyakreshahoyash mejabbad. Dar khok ob dar shakli kholis vujud nadorad. Vay metavonad dar shakli mahluli khoki, ki namakhoi madanii dar ob halshavanda dorad, dastrasi rastaniho gardad. Minbad dar rastani ba mahluli in moddaho chi hodisa …

Malum ast, ki hangomi ba neshzani shuru kardani tukhm, pesh az hama reshachai janin nesh zada mebaroyad. Saravval on kam ayon buda, vale ba zudi kad kashida kalon meshavad. In hodisa chi tavr amali megardad? Reshachai janini tukhm va reshai rastanii nashunamokunanda monandi digar uzvhoi rastani niz az hujayraho iboratand. …

Muhlati kishti maysa: Hangomi chashidani tami tukhmi nasabzida (baroi muqoisa), sipas doni neshzadai jav, gandum yo javdor, shumo ba andak shirin budani tukhmi neshzada bovari hosil mekuned. Zero hangomi sabzishi tukhm ohari endospermi tukhm az tasiri ob va moddahoi makhsus ba kand tabdil meyobad. Sipas, qand dar shakli mahluli obi …