Morphology. Nematodes yog triploblastic protostomes nrog lub plab zom mov tiav. Roundworms tsis muaj circulatory los yog ua pa systems yog li lawv siv diffusion ua pa thiab rau kev ncig ntawm cov khoom nyob ib ncig ntawm lawv lub cev. Lawv nyias nyias thiab yog puag ncig hauv ntu ntu, txawm tias lawv ua tau ob tog sib luag.
Pob nematodes muaj kab mob ua pa?
Nematodes yog puag ncig nrog lub cev kab noj hniav. … Txawm hais tias cov nematodes muaj lub plab zom mov, kev ua me nyuam, lub paj hlwb thiab excretory, lawv tsis muaj cov kab mob sib kis lossis ua pa ua pa.
Kev pauv roj tshwm sim nyob qhov twg hauv nematodes?
Ib lub cuticle yog ib qho waxy npog zais los ntawm epidermis, lossis cov ntaub so ntswg sab nraud. Vim tias qhov npog no, kev sib pauv roj tsis tuaj yeem tshwm sim ncaj qha hla ntawm daim tawv nqaij xws li flatworms. Hloov chaw, kev sib pauv roj thiab pov tseg hauv cov nematodes tshwm sim los ntawm diffusion hla phab ntsa ntawm lub plab
Yuav ua li cas worms marine tau oxygen?
Lawv nqus oxygen los ntawm lawv daim tawv nqaij thiab nws kis ncaj qha rau txhua lub cell hauv lawv lub cev. Raws li qhov tshwm sim, lawv zoo nkauj npaum li tsis muaj xim, lossis dawb. Roundworms: Kuj hu ua nematodes, cov cab no feem ntau pom hauv av.
Yuav ua li cas nematodes tshem tawm pov tseg?
Excretory system
Nitrogenous pov tseg yog tawm hauv daim ntawv ntawm ammonia los ntawm lub cev phab ntsa, thiab tsis cuam tshuam nrog ib yam khoom nruab nrog cev. … Nyob rau hauv ntau lub marine nematodes, ib los yog ob lub unicellular 'renette qog' tawm ntsev los ntawm ib qho pore nyob rau hauv qab ntawm tus tsiaj, ze rau pharynx.
