Porifera. Tag nrho cov tswv cuab ntawm lub Poriferaphylum tsis muaj ib tug txawv excretory system. Hloov chaw, cov kab mob no siv rau hauv cov dej ntws los tshem tawm cov khoom pov tseg. Hauv Porifera cov khoom pov tseg xws li ammonia diffuse rau hauv cov dej hauv cellas raws li nws lub cev.
Nyob rau hauv tas li ntawd, puas sponges muaj ib tug excretory system?
Ua pa, pub mis thiab excretion Sponges ua tsis yog muaj txawv circulatory, ua pa, digestive, thiab excretory systems - hloov cov dej ntws qhov system txhawb nqa tag nrho cov haujlwm no. Lawv lim cov khoom noj tawm ntawm cov dej ntws los ntawm lawv.
Tsis tas li ntawd, sponges digest li cas? Daim txhuam cev muaj ob peb lub hlwb tshwj xeeb, thiab ua tsis muaj ib tug digestive system. Lawv tau txais cov khoom noj los ntawm kev lim dej los yog lim cov khoom noj los ntawm dej. Zoo li tag nrho daim txhuam cev, lub Flask Daim txhuam cev digests los ntawm intracellular digestion thiab tshem tawm cov khib nyiab los ntawm nws cov dej tsis tu ncua.
Nyob rau hauv kev hwm rau qhov no, yuav ua li cas porifera tshem tawm pov tseg?
Cells nyob rau hauv cov phab ntsa sponge lim oxygen thiab zaub mov (cov kab mob) los ntawm cov dej raws li cov dej ntws los ntawm lub cev. Daim txhuam cev siv cov dej tam sim no thiab cov txheej txheem ntawm diffusion kom nqus oxygen los ntawm dej thiab mus rau tshem tawm ntawm lawv cov metabolic pov tseg cov khoom.
Yuav ua li cas porifera zom zaub mov?
Daim txhuam cev ua tsis muaj lub paj hlwb, digestive lossis circulatory system. Lawv vam khom kom cov dej ntws tsis tu ncua los ntawm lawv lub cev kom tau txais zaub mov thiab oxygen thiab tshem tawm cov khoom pov tseg. Cells nyob rau hauv daim txhuam cev phab ntsa lim zaub mov los ntawm cov dej raws li cov dej ntws los ntawm lub cev thiab osculum ("littlemouth").
