Izibonelo eziyi-10 Zezilwane ZasePoikilothermic - Encyclopedia

Ividiyo: Frog is a poikilotherm , exhibirts cam =oufalge and undergoes aestivation and hibernation how are

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Izici nokuziphatha
Ubuhle nobubi
Izilungiselelo zePoikilotherm
Okuhlukile
Izibonelo zezilwane ze-poikilothermic

I- izilwane ze-poikilothermic (muva nje okubizwa ngama-‘ectotherms ’) yilawo alawula izinga lokushisa kwawo kusuka emazingeni okushisa asendaweni.

Lokhu kwenzeka ngoba azinazo izici zezinye izinto eziphilayo, ezizokwazi ukulawula ukushisa komzimba wazo ngokukhiqiza ukushisa: yingakho lezi zinhlobo zezilwane zivame ukubizwa ngokuthi yizilwane "ezinegazi elibandayo". Izilwane ezingewona ama-poikilotherm yi-'otherotherms '(noma' endotherms '), okugqama kuzo zonke izilwane ezincelisayo.

Izici nokuziphatha

Ngokuvamile, ama-poikilotherms amancane kakhulu ajwayela ukushisa kwamakamelo, kepha kukhona amanye awo anganciphisa amazinga okushisa asezingeni eliphezulu ngokuya ngokuziphatha okushisayo, futhi kungaleso sikhathi lapho belinganisa khona ithonya lesikhashana lokuhlukahluka kwezinga lokushisa.

Muva nje ososayensi abathile bathole ukuthi ukushintshashintsha kwansuku zonke emazingeni okushisa akhona kuguqula ukuzwela kwezinhlobo zezulu ekushiseni okubangelwa ukuguquka kwesimo sezulu, ngokwehlisa imiphetho yokuphepha okushisayo.

Ubuhle nobubi

Ngenkathi izilwane ezi-endothermic zikhiqiza ukushisa ngamandla avela kokudla, ama-ectotherms akudingeki zondle nsuku zonke futhi bangakwazi ngisho nokuhamba izinyanga ngaphandle kokondla.

Lokhu kubanikeza inzuzo, okususwa yiqiniso lokuthi azikwazi ukuhlala ezindaweni ezinamazinga okushisa adlulele, ngoba zincike kakhulu ekuguqulweni kwemvelo: ama-endotherm, ngakolunye uhlangothi, angahlala ezindaweni ezibandayo noma ezifudumele.

Izilungiselelo zePoikilotherm

Njengakuma-ectotherms ukulawulwa kwamazinga okushisa kuncike ekhonweni lokulawula ukushintshana kokushisa nemvelo, kujwayelekile ukuthi okunye kufanele kukhiqizelwe i-thermoregulation. Lokhu kwehlukaniswe ngamaqembu amabili:

I- ukulungiswa kokuziphatha Yizinguquko ekuziphatheni ezifuna izindawo ezisendaweni lapho izinga lokushisa livuna khona imisebenzi. Kunezinhlobo ezithile ezibizwa ngokuthi i-euthermic, ezingaphila ngaphakathi kwezinga elibanzi lokushisa komzimba.
I- ukulungiswa komzimba Yilezo eziguqula isigqi se-metabolic ezingeni lokushisa elikhona, ngendlela yokuthi amandla we-metabolism awashintshiwe. Lolu hlobo lwesilwane lwenza isinxephezelo sokushisa esivumela ukuthi babe nezinga elifanayo lomsebenzi ezindaweni ezinezimo zezulu ezahlukahlukene: zifana neziphetho, ezilawula ngqo imetabolism yazo kungakhathalekile ukushisa komzimba.

Okuhlukile

Kukhona ezinye izimo zezilwane ezingekho ectothermic, kepha ezinokuziphatha okufanayo.

I- ukuphela kwesifunda, ngokwesibonelo, kwenzeka lapho izinga lokushisa kwenhliziyo nelama-gill lishintsha nezinguquko ekushiseni kwemvelo, njengoba kwenzeka kwamanye amaqembu ezinhlanzi.
I- amandla endothermyNgakolunye uhlangothi, kwenzeka kaningi ezinambuzaneni ezingakhipha ukushisa ngokuthuthumela kwemisipha yazo, zikhuphule izinga lokushisa komzimba isikhathi esithile.