Sokhti darunii poyai darakht

Juzhoi burishi kundalangi yagon shokhcha, gula yo kundai darakhtero, ki ba nazdiki buridaand, az nazar meguzaronem. Dar sathi juzi burish yo arrashudai gula se qabat farq karda meshavad. Qabati berunii siyohtobu nisbatan tunukro pustlokh meguyand. Vay az boftahoi gunogune, ki qabatqabat joygirand, iborat ast. Qabati sakhte, ki az hama serbar buda, dar zeri pustlokh joy giriftaast, chub meboshad. Dar miyonai chub dila (dilak) joygir shudaast va nagz namudor ast. Dilai chubi larzonbed, marjonbutta va baze rastanihoi digar narm buda, dilai chubi tus va bulut khele sakht ast va hududi bayni chubu onro didan dushvor ast.

Juzi burishi kundalangi shokhchai sesolai zirfunro dar zeri mikroskop az nazar meguzaronem.

Dar zeri qabati pust hujayrahoi puk joygir ast. Pust va puk az boftai pushish tashakkul yoftaand. Onho hujayrahoi nisbatan chuqurjoygirshudai poyaro az bisyor bukhor shudani ob, osebbini va az dokhilshavii gardu chang va mikroorganizmkhoi kasalangez muho- fizat mekunand.

Dar pusti poya masomaho hastand, ki tavassuti onho mubodilai gaz ba amal meoyad. Dar puk lundachahoi surokhdor “naskdonaho” inki- shof meyoband. Naskdonaho niz dar mubodilai gazi ishtirok mekunand.

Dar baze darakhton (masalan, darakhti pukbulut) qabati puk khele gafs meshavad. Dar khojagi puki darakhti pukbulutro ba maqsadhoi gunogun istifoda mebarand.

Dar zeri qabati puk hujayrahoi pustlokhi ibtidoi va az on chuqurtar lif joy giriftaast 6S- Lif az naychahoi elakshakl va nakhhoi devorgafsi lifi iborat ast. Nakhi lif poyaro chandir va mustahkam mekunad. Vay az khujayrahoi darozruyae, ki moddahoi dokhiliashon vayron va jildashon chub shudaast, iborat buda, boftai me khanikiro (sobiti poyaro) ba vujud meorad. Hususan nakhi lifi zagirpoya, zirfun va baze digar rastaniho khele khub inkishof yoftaast. Onho khele mustahkam buda, az nakhi lifi zagirpoya suf va az nakhi lifi zirfun dastmol va chip- ta tayyor mekunand.

Dar zeri lif chub joy giriftaast. Agar ba sathi chube, ki nav pust kanda shudaast, dast rasoned. tari va lagjonakii onro his mekuned. Zero dar bayni pustlokh va chub kambiy joygir shudaast.

Kambiy az hujayrahoi boriku darozi boftai hosilkunanda iborat buda, jildi nihoyat nafis dorad. Vay bo chashmi oddi dida na- meshavad. Vale dar vaqti kandani pustlokh hujayrahoi kambiy darida, shirai hujayrahoi on shorida, sathi Rasmi 66. Juzi burishi kundalangi

Dar faslhoi bahoru tobiston hujayrahoi kambiy boavj taqsim meshavand. Dar natija dar du tarafi kambiy qabathoi navi hujayraho hosil meshavand. Hujayrahoi dar tarafi pustlokh gungardida khujayrahoi navi lif- ro va hujayrahoi dar tarafi chub jamomada hujayrahoi navi chubro tashkil medihand. Hamin tavr, gafsshavii poya ba amal meo- yad. Binobar on, kambiyro boftai bavujudovaranda meguyand.

CHub qismi asosii poyai darakht ast. Vay az hujayrahoi shaklu an- dozaashon gunogun hosil shudaast.

Pardai (jildi) bisyor hujayrahoi chub gafs shuda, moddahoero dar bar giriftaast, ki onho ba on mustahkami mebakhshand. Dar qismi chub inchunin raghoi naychamonandi daroz dokhiland.

Dila az boftai narm iborat buda, az hujayrahoi kaloni parda- ashon nafis iborat ast. Dar on moddahoi gizoi zakhira meshavand.

1. Sokhti tanai darakht yo butta chi guna ast?
2. Pust va puk chi ahamiyat dorand?
3. Lif az chi khel hujayraho iborat ast?
4. Kambiy chist va dar kujo joygir shudaast?
5. Hujayrahoi dilak az hujayrahoi digar qabathoi poya chi farq dorand?
6. Dar burishi kundalangii poya kadom qabatho farq karda meshavand?