Cov ntsaws ruaj ruaj tsis muaj pob ntseg, phocids lossis cov ntsaws ruaj ruaj yog ib ntawm peb pawg tseem ceeb ntawm cov tsiaj txhu nyob rau hauv lub foob pob, Pinnipedia. … Tej zaum lawv raug hu ua crawling seals kom paub qhov txawv ntawm cov ntsaws ruaj ruaj thiab cov tsov ntxhuav hiav txwv ntawm tsev neeg Otariidae.
Puas yog ib tug tsiaj txhu los yog amphibian?
Seal, ib yam ntawm 32 hom ntawm web-footed aquatic mammalsuas nyob hauv cov hiav txwv txias thiab nws lub cev zoo li puag ncig ntawm nruab nrab thiab tapered ntawm qhov kawg, yog yoog. ua luam dej nrawm thiab zoo nkauj.
Puas yog tsiaj txhu los yog tsiaj txhu?
Thaum muaj ntau qhov sib txawv ntawm cov tsiaj, txhua lub ntsaws ruaj ruaj muaj ob txhais taw zoo li fins. Qhov tseeb, lo lus pinniped txhais tau tias "fin-footed" hauv Latin. Cov ko taw zoo li no ua rau lawv ua luam dej zoo tshaj plaws, thiab txhua tus pinnipeds raug suav hais tias yog ib nrab-dej marine mammals.
Yuav ua li cas earless seals reproduce?
Kev tsim tawm ntawm cov chaw nres nkoj feem ntau tshwm sim underwater thiab tsis muaj ntaub ntawv zoo. Cov poj niam yug tau ib tug menyuam dev txhua xyoo. Cov menyuam mos tuaj yeem ua luam dej tam sim tom qab yug me nyuam thiab saib xyuas nrog lawv niam txog rau lub lis piam.
Vim li cas cov foob pob ntseg tsis mloog?
Phocids raug hu ua "earless seals" vim lawv pob ntseg tsis yooj yim pom, thaum otarids raug hu ua "eared seals." Ntxiv rau qhov muaj pinna, muaj lwm qhov sib txawv ntawm otarids thiab phocids.
