Isebenza kanjani i-pine cone?
Context:Isigaxa sesifazane sinezinhlobo ezimbili zesikali: izikali ze-bract, kanye nezikali zembewu (noma izikali ze-ovulifer), eyodwa engaphansi kwesikali ngasinye se-bract, esuselwa egatsheni eliguqulwe kakhulu. Ehlangothini olungaphezulu lwesikali ngasinye sembewu kunamaqanda amabili akhula abe imbewu ngemva kokuvundiswa izinhlamvu zempova. Izikali ze-bract zikhula kuqala, futhi ziyabonakala ngesikhathi sokuvundiswa; izikali zembewu zikhula kamuva ukufaka nokuvikela imbewu, kanti izikali ze-bract zivame ukungakhuli. Izikali zivulwa okwesikhashana ukuze zamukele impova, bese zivaleka ngesikhathi sokuvundiswa nokuvuthwa, bese zivulwa futhi lapho zivuthiwe ukuze imbewu ikwazi ukuphuma. Ukuvuthwa kuthatha izinyanga ezingu-6 kuya kwezingu-8 kusukela ekutholeni impova ezinhlotsheni eziningi zePinaceae, kodwa izinyanga ezingu-12 kumisedari nezinyanga ezingu-18 kuya kwezingu-24 (ngokuvamile ngaphezulu) ezinhlakeni eziningi zamaphayini. Ama-cone avulwa noma ngama-scales embewu agobeka emuva lapho esoma, noma (emithini yemithi yemithi, imisedari kanye ne-golden larch) ngama-cones ahlukana nama-scales embewu ewayo. Amaconsi angamakhoni, angama-cylindrical noma ama-ovoid (afana neqanda), futhi amancane noma amakhulu kakhulu, asukela ku-2<unk>60 cm ubude no-1<unk>20 cm ububanzi.  Ngemva kokuvuthwa, ukuvuleka kwamaconsi ephayini angenayo i-serotinous kuhlobene nokuqukethwe kwawo umswakama. Amaconsi avulwa lapho omile futhi avale lapho emanzi. Lokhu kuqinisekisa ukuthi imbewu encane, ethwalwa umoya iyosakazeka lapho isimo sezulu sesomile, futhi ngaleyondlela, ibanga elihanjwa lisuka esihlahleni somzali liyothuthukiswa. Iphayini lizovula futhi livale izikhathi eziningi phakathi nesikhathi sokuphila kwalo, ngisho nangemva kokuba imbewu isiqediwe ukusabalala. Le nqubo yenzeka lapho amaconsi amadala enamathiselwe emagatsheni ngisho nalapho amaconsi amadala esewele phansi ehlathini. Isimo samaphayini awile siyinkomba engahluziwe yokuqukethwe umswakama phansi kwehlathi, okuyisibonakaliso esibalulekile sengozi yomlilo. Izigaxa ezivaliwe zibonisa izimo ezinomswakama kuyilapho izigaxa ezivulekile zibonisa ukuthi iphansi lehlathi lomile.
Iphayini linamaxolo avikela imbewu. Izikali zingavuleka futhi zivale kuye ngezimo. Izikali zizovuleka okwesikhashana ukuze zamukele impova, bese zivaleka futhi kuze kube yilapho imbewu ivuthwa. Lapho sezivuthiwe, izikali ziyovuleka futhi zivale kuye ngokuthi zinomswakama ongakanani. Lapho imbewu isikhulile, amagobolondo angavulwa futhi ukuze imbewu ikwazi ukuphuma. Lapho sezomile, izigaxa ziyavuleka zivumele imbewu encane ethwalwa umoya ukuba ihlakazeke kabanzi ngangokunokwenzeka. Lo mjikelezo wokuvulwa nokuvalwa uyaqhubeka kuze kube yilapho imbewu isakazeka.