Izici Bezakhiwe kanye nesakhiwo Chlamydomonas

Chlamydomonas - ephilayo owumphumela, bokuthi okuyinto khona flagella ezimbili apical. Kuyinto uhlobo lwe ulwelwe oluluhlaza uhlala amanzi amile futhi inhlabathi ezimanzi, kanye amanzi ahlanzekile noma ulwandle. Isakhiwo Chlamydomonas enezinto eziningi izici. Phakathi lezi ziteshi ion ukuthi ivuswe ngu ukuchayeka ngqo ukukhanya, futhi abomvu iso photosensitive kanye eziyinkimbinkimbi uhlelo lokulawula lolu hlelo.

Chlamydomonas: ulwazi olujwayelekile

Ngu uhlobo ukudla iningi zinhlobo phototrophic baphoqwe. Ukuthi nje enye heterotrophs facultative, ukhule okungaba ebumnyameni, usebenzisa njengoba carbon imithombo acetate. Ngo morphology salo mobile ulwelwe unicellular, ngokuvamile amise okweqanda. Udonga cell siqukethe glycoprotein. Chlamydomonas ukukhiqiza kabusha kokubili kwezocansi asexually.

Kunezinhlobo ezingaba ngu-150 zama. Chlamydomonas ngenkuthalo proliferates endaweni zinomswakama kanye emanzini-ocebile ammonium compounds. Izici isakhiwo Chlamydomonas zihlanganisa khona zombala. Anodaka oluhlaza umbala amanzi amile ngenxa yokubakhona ezinkulungwane nezilwanyana ezincane flagellated. sombala bright red zenye kunomthelela staining eziphila kulesi umbala obomvu noma pink. Ezinye izinhlobo zawo zitholakala ezindaweni eziningi ezingalindelekile, ezifana emanzini olwandle okunosawoti.

Isakhiwo Chlamydomonas

Ngo yomgogodla wesibeletho kukhona flagella ezimbili, ukuthatha ivelaphi kusukela okusanhlamvu basal ise cytoplasm. lezisekelo zazo contractile vacuole. Isakhiwo Chlamydomonas amaseli kusikisela ukuba khona chloroplast inkomishi emise, iphi kuyi-nucleus yengqamuzana. kwakhiwa Kukhona kwimikhiqizo ye-photosynthesis isitashi kanye amaprotheni, sizungezwe nangangesihlabathi isitashi. Esesicabheni ibe indawo ikhona phambi chloroplast. Siqukethe ezimbili noma ezintathu, ngaphezulu noma imigqa ngaphansi okucishe kufane nalokhu yemigqa ahlelwe amaconsi amafutha.

Izici isakhiwo

Ngo isigaba saso vegetative umzimba has a isakhiwo silula. Ubukhulu bayo uyahluka 0.02 mm. Iseli ngalinye has a eyindilinga, ellipsoidal, cylindrical noma ipheya ukuma. Sinenkosi ukuthambekela ezicijile phambili ekupheleni. Ukwakheka Chlamydomonas iseli yakhiwa odongeni mncane yangaphandle, flagella ezimbili, kanye vacuoles ezimbili contractile obhekene okumelwe uphefumule futhi ukhulume excretion. Lo mbala orange-bomvu noma eyelet (inhlamba) elondolozwe ku odongeni cell mkhulu, futhi yenza umsebenzi a bakudala njengoba kuba kakhulu sensitive ekukhanyeni. Ezinye izinhlobo kungenzeka khona ababili noma abathathu izindawo iso. okusezingeni eliphezulu chloroplast cupped, esemgwaqweni ngaphakathi core itholakala engxenyeni okubanzi umzimba cytoplasm.

Kanjani isakhiwo esitokisini ukukhiqizwa kabusha asexual?

Chlamydomonas isakhiwo sibhekana nezinguquko ezithile phakathi cell division. ukukhiqizwa kabusha Asexual kwenzeka ngendlela elandelayo: ukudalwa izimo ezikahle kwakhiwa zoospores iseli ngaleyo ndlela kuba fixed, flagella fihla noma alahlwe zinyamalale futhi vacuoles contractile protoplast ihlukaniswe longitudinally zibe izingxenye ezimbili, ngasinye sazo, esikhundleni salokho, ihlukaniswe yaba izingxenye 2. Ngakho, noma iyiphi iseli ukhiqiza zokwakheka efanayo 2 16 Kimi. Kancane kancane, abantu abasha avele zonke izakhiwo nobuntu ulwelwe oluhlaza: flagella, vacuoles, nokunye. Ngamunye wabo esiholela isitshalo entsha. Le nqubo ngokwahlukana iyaphindwa njalo ngemva kwamahora angu-24. Ngakho ekupheleni kwesonto komunye umama isitshalo ukhiqiza abangaba yizigidi ezimbili abantu kwakhiwa.

Izici ukuzala

Phakathi ngokobulili ukukhiqizwa kabusha iseli protoplast sihlukaniswe ngu 16, 32 noma ngisho 64 flagellates gametes ukuthi kungaba uncoated noma zeziboshwa udonga cell. Ubulili amaseli ukuxuba ngababili ukwakha zygote. Ngenxa yalokho, it is babanjwa, uyahoxa flagella, ukwakha udonga obukhulu emhlabeni cytoplasm futhi eshona phansi kwesigubhu ekuthuthukiseni olwengeziwe. Kuleli fomu ke uzinzile lokushisa futhi bayosinda ngisho noma kwesigubhu seyomile. Zoospores futhi gametes kukhona morphologically efanayo. Ziyahlukahluka kuye kuphela ngobukhulu nokuziphatha. Lo mehluko wenza kuphakama ngenxa amayunithi ngaphezulu iseli umama ngesikhathi kumiswa gametes. Ngakho, abantu encane bangalahlekelwa ukukwazi kwabo ukuzithiba mihlangano.