Sharks yog "cov ntshav txias" (poikilothermic) tsiaj, txhais tau tias lawv lub cev kub yog tib yam li cov dej uas lawv nyob. … Lub network no pab txuag cov cua sov hauv lub cev, tsis yog tso cai rau nws mus rau hauv dej txias dua.
Vim li cas sharks txias ntshav?
Puas yog sharks sov lossis ntshav txias? Feem ntau sharks, zoo li feem ntau ntses, yog ntshav txias, los yog ectothermic. Lawv lub cev kub sib xws nrog qhov ntsuas kub ntawm cov dej nyob ib puag ncig lawv. … Tus ntses dawb muaj peev xwm tswj tau nws lub plab kub npaum li 57ºF (14ºC) sov dua li qhov kub ntawm dej.
sharks tswj lawv lub cev kub li cas?
Lamid sharks, xws li cov dawb dawb thiab mako, nquag tswj lawv qhov kub thiab txias tuaj yeem ncav cuag 20 degrees siab dua lawv qhov chaw nyob ib puag ncig. Lawv ua li no los ntawm kev npaj tshwj xeeb ntawm cov hlab ntsha. Cov ntshav txias oxygenated nkag mus rau hauv cov gills thiab dhau los ntawm cov hlab ntsha sov deoxygenated.
Puas yog cov dawb sharks Homeothermic?
The Great White Shark thiab Mako Shark yog piv txwv ntawm homeotherms. Qee tus sharks thiab lwm cov ntses tseem tuaj yeem khaws qee qhov chaw ntawm lawv lub cev (xws li lawv lub qhov muag thiab lub hlwb) sov dua li lwm tus kom lawv txoj haujlwm tsis sib tham txawm tias thaum lawv cov leeg thiab cov metabolism qeeb.
Yuav ua li cas shark ntshav txias?
Muajsharks yog ntshav txias. Ib txhia, zoo li Mako thiab lub Great dawb shark, yog ib nrab ntawm cov ntshav sov (lawv yog endotherms). Cov sharks no tuaj yeem nce lawv qhov kub ntawm qhov kub ntawm cov dej; lawv yuav tsum muaj qee lub sijhawm luv luv ntawm kev yos hav zoov.
