Iimpawu zolwakhiwo kunye nesakhiwo Chlamydomonas

Chlamydomonas - a kokuphilayo kweseli olunye-, ngokwenene leyo phambi misila ezimbini apical. It is a sodidi lwe ulwelwe eluhlaza ehlala emanzini amileyo kwaye umhlaba omanzi, ngokunjalo emanzini aphilileyo okanye elwandle. Ubume bale Chlamydomonas kukho inani iimpawu. Phakathi kwezi sele zichaziwe ion ukuba luyasebenza kukungakhuseleki ngqo ekukhanyeni, amehlo ebomvu photosensitive kunye nenkqubo ezintsonkothileyo zolawulo.

Chlamydomonas: ulwazi ngokubanzi

Xa uhlobo lokutya inkoliso iintlobo phototrophic nesibopho. Kodwa abanye heterotrophs facultative, ongakhula ebumnyameni, esebenzisa njengoko imithombo carbon acetate. Xa morphology yayo yeselula ulwelwe kwiseli enye, ngokuqhelekileyo elimbhoxo. Udonga seli iquka glycoprotein. Chlamydomonas ukuzala zombini ngokwesondo asexually.

Kukho malunga ne-150 iintlobo. Chlamydomonas ngenkuthalo proliferates kwindawo ulophu, ngokunjalo emanzini-rich iikhompawundi Ammonium. Iimpawu ze ubume Chlamydomonas ziquka phambi zombala. Ezinodaka oluhlaza umbala amanzi amile ngenxa yobukho amawaka ezincinane flagellated. kombala Bright obomvu zenye negalelo luyawudyobha eziphila umbala obomvu okanye pink. Ezinye iintlobo zifumaneka kwiindawo ezininzi ezingalindelekanga, ezifana emanzini anetyuwa elwandle.

Isakhiwo Chlamydomonas

Xa umnqonqo wesibeleko kukho misila ezimbini, ukuthatha imvelaphi yalo beenkozo carcinomas ise-icytoplasm. neziseko zazo contractile vacuole. Ubume weeseli Chlamydomonas lubonisa ubukho chloroplast indebe-ezimilise, iphi na elakha cell. Kukho wabumba iimveliso zefotosinthesis wesitatshi kunye protein, singqongwe engenakubalwa istatshi. Yomnyango ibe itshatshazi ekhoyo phambi chloroplast. It iqulathe ababini okanye abathathu, ngaphezulu okanye imiqolo ngaphantsi engumzekelo amathontsi ezityebileyo linearly amalungiselelo.

Iimpawu lwesakhiwo

Sikwinqanaba kwezityalo kumzimba na isakhiwo elula kakhulu. ubukhulu balo uyahluka 0,02 mm. Iseli nganye a ungqukuva, ellipsoidal, zezindlu okanye imilo emibhaka. Kufuneka anento Walathe ekupheleni ngaphambili. Ulwakhiwo Chlamydomonas cell iqulathe udonga obhityileyo ongaphandle, misila ezimbini, kwakunye vacuoles ezimbini contractile onoxanduva zokuphefumla zinomgutyulo. I-orenji-ebomvu kombala okanye ngomngxunyana (ibala) agcinwe eludongeni yeseli ziyatyeba, kwaye enze umsebenzi ngendlela eyayingekaphuhli njengoko ethe kakhulu ukukhanya. Ezinye iintlobo inokuba phambi amabala amabini okanye amathathu iliso. chloroplast eliphezulu luphahlwe, nto leyo ibekwe ngaphakathi olungundoqo ifumaneka kwi ebanzi lomzimba kwi icytoplasm.

njani ubume iseli kunye yokuzala maqanda?

isakhiwo Chlamydomonas ivavanywa utshintsho ngexesha hlula cell. ukuzala maqanda kwenzeka kule ndlela ilandelayo: nokudalwa iimeko zivuma wabumba zoospores iseli oko uba esisigxina, fihla misila okanye ezilahliweyo shwaka kwakhona vacuoles contractile protoplast yahlulwe longitudinally iinxalenye ezimbini, nganye, nayo, yahlulwe-2. Ngenxa yoko, enye iseli kuvelisa-2 ukuya ku-16 Me izinto ezakhiwe efanayo. Ngokuthe ngcembe, le intsha kuvela zonke izakhiwo uphawu ulwelwe eluhlaza: misila, vacuoles, njalo-njalo. Ngamnye kubo ikhula iba isityalo esitsha. Le nkqubo okuhlamba iyaphindwa qho kwiiyure ezingama-24. Ngoko ekupheleni kweveki ukusuka kwisityalo omnye umama uvelisa malunga nezigidi ezibini abantu kwakhiwa.

Iimpawu ukuzala

Ngexesha ukuzala iseli protoplast ziyahluleka ngo-16, 32 okanye 64 nokuba flagellates gametes ukuba ingaba uncoated okanye amabanjwa eludongeni yeseli. iiseli Sex aya ngababini ukwenza elilodwa. Ngenxa yoko, oko lirhangqwa, itsala misila, ukwakha iindonga elinzima ehlabathini kukho icytoplasm kwaye utshona ukuya ezantsi ichibi malunga nophuculo. Kule fomu ngayo uzinzile kwiqondo lobushushu yaye uya kusinda nokuba ichibi lome. Zoospores kunye gametes ziyafana morphologically. Ahluke kuphela ubungakanani kunye nokuziphatha. Lo mahluko ubangelwa ngenxa kweeyunithi ngaphezulu kweseli unina ngexesha ukuyilwa gametes. Ngenxa yoko, abantu ezincinane banokulahlekelwa kukuba nako kwabo self-sokutya.