Idan kana daya daga cikin wadanda suke son yawo a cikin gonakin kuma ka lura da shuke-shuke, to da alama ka lura da yadda wasu tsirrai suke son lsunflowers, koyaushe suna duban rana, suna neman haske da haskenta. Kodayake ba za su iya motsawa daga ƙasa ba, yayin rana suna motsa ƙwanƙwashinsu gwargwadon inda babban tauraron sarki yake.
Baya ga furannin rana, hakika kun lura cewa wasu tsire-tsire suna girma ta hanyar da rana take fitowa daga gare ta, kuma da rana suna kokarin bin hasken da ya fito daga wannan babbar tauraruwa. Amma kun taɓa yin mamaki me yasa wasu tsirrai suke bin hanyar rana? Kodayake amsar tana iya zama mai sauƙi, amma ba haka ba ne. Daya daga cikin mutanen farko da suka yi wannan tambayar shine Leonardo Da Vinci, kuma daga wannan tambayar, mutane da yawa sun fara yin irin wannan.
A halin yanzu, wani rukuni na masu binciken Turai sun yi bincike wanda ya kawo mu kusa da amsar: a fili yake shuke-shuke yana da hormone mai suna auxin, wanda ke sa su nemi hasken rana. Ana adana wannan hormone a wasu wurare a cikin shuka, kamar ɓangarorin da ke girma na shukar, sannan kuma a kai shi zuwa wasu wurare ciki har da kara.
Ta yadda shuka zata iya kaiwa sha isasshe kuma da kyau hasken ranaYana da matukar mahimmanci a mike kara da wuri-wuri don ta iya kai wa ga tsayi kuma ta ɗauki hasken rana. A saboda wannan dalili ne za a fara samar da mafi yawan wannan hormone auxin zuwa ƙananan yankin na shuka, wanda shine dalilin da yasa kara ya fara girma kai tsaye. Ta wannan hanyar, tsire-tsire suna iya yin amfani da kyakkyawan yanayin sauyin yanayin muhallin su.