Esikolweni nakwiziko ndiyakhumbula ukuba ngalo lonke ixesha ndibuza Kutheni izityalo ziluhlaza njeBaye bandiphendula phantse bahlala ngokufanayo: kuba banombala, iklorofili, ebanika loo mbala. Kwaye kunjalo, ngokweengcali zezityalo. Kodwa ... Ndihlala ndinombuzo wokwazi ngakumbi, uthini ngawe?
Njengokuba. Ngethamsanqa, i-botanists zi (nokuba) ziingcali ngakumbi ebaleni, kwaye baye bakwazi ukufumana okungakumbi malunga nesi sihloko. Yile nto bayifumeneyo ukuza kuthi ga ngoku.
Izinto eziphilayo ze-photosynthetic, oko kukuthi, ezo ziguqula amandla elanga abe kukutya kwaye zikusebenzise ekukhuleni, njengezityalo kodwa neebhaktiriya, zinombala othile. Kodwa banalo mbala ngesizathu: xa befumana ukukhanya kwenkosi yenkwenkwezi, ingena kwiimolekyuli zeklorophyll ezinombala omnye. Ngale ndlela, banokuzikhusela ngokuzenzekelayo kutshintsho elangeni.
Kwimeko ethile yezityalo, Ezi zinombala oluhlaza kuba zona ziloluhlu lwemibala ebonakalayo yelanga eziyifunxayo, kuphela kwento efanelekileyo ngokwenene, ke oko kuthintela ukutsha.
Oku kuchaza ukuba kutheni isityalo esiveliswa lilanga okokuqala sisiba semngciphekweni: iiseli ezijongene nokufunxa amandla elanga azilungiselelwanga wona, ngenxa yoko zifuna inkqubo 'yokufunda' kunye nokuziqhelanisa nayo, into eza kuyenza nanini na Kuyimfuneko ukuba ukukhanya kukhule; Oko kukuthi, umzekelo ifern, ehlala emthunzini, ayisokuze ikwazi ukukuqhela ukuhlala kwindawo enelanga.
Kodwa kusekho okungakumbi. Ngokwabaphandi, izityalo ziye zaphuhlisa eyazo i-UV protector. Njengoko sisazi, ukuvezwa ixesha elide kwimitha ye-UV kunokubangela ukutsha kunye nomhlaza wolusu, izityalo zinokwenzakaliswa: ukulahleka okugqithisileyo kwamanzi okuya kukhokelela ekuphelelweni ngumzimba, kukutsha, nakwiimeko ezimbi ngakumbi, ukufa.
Ukuthintela oku, ngokungathandekiyo, baya photosynthesize. Ukwenza ukuba kube lula ukuyiqonda, inokuthelekiswa nento eyenzekayo xa unkcenkceshela imbiza ezaliswe ngumhlaba owomileyo kwaye odibeneyo. Kwezi meko, amanzi aphuma kwimingxunya yokuhambisa amanzi embizeni aphakame kakhulu kunoko kunokuphuma ukuba umhlaba ubukwazile ukuwufunxa.
Ukuba nge ifotosinthesis, kanye xa unkcenkceshela umhlaba odibeneyo, Ukuhamba kwamandla elanga ukuya kumagqabi kukhulu kuneeseli ezijongene nokuwufunxa, kuya kufuneka zilungelelanise ngokukhawuleza kangangoko kunokwenzeka ukuze zilungelelanise kwaye zinciphise ifuthe lokugcwala kwamandla avela elangeni.. Ukuba awukwenzi oko, isityalo siza kuzama ngandlela thile ukukhupha la mandla, ngenxa yoko sigqiba kwinto eyaziwa ngokuba luxinzelelo lwe-oxidative, oluya konakalisa iiseli.
Inomdla, akunjalo?
Ngaba ungathanda ukufunda isifundo? Cofa apha.