Yuav ua li cas yog ib qho nyob rau hauv cov khoom noj ntawm Amphioxus thiab shellfish: Comparative yam ntxwv

Nyob rau hauv no tsab xov xwm koj yuav nrhiav tau cov lus teb rau cov lus nug txog yuav ua li cas noj qwj ntses uas tag nrho kev noj haus Amphioxus thiab shellfish. Cov kab mob no yog muab piv tsis yog lo. Lawv muaj ntau yam zoo sib xws, ntau yam uas txhawj xeeb thiab physiological dab.

Amphioxus thiab shellfish: dej inhabitants

Amphioxus yog lub feem ntau txheej thaum ub cov tsiaj xws li chordal. Tab sis nws txoj hauj lwm nyob rau hauv cov organic ntiaj teb no system los mus txiav txim tias nws tsis yog ib qho yooj yim. Zaum tau muab nws npliag deg thiab hu ua lanceolate sib zog ntaus. Tsuas yog 60 xyoo tom qab tus foundations ntawm no tsiaj los ua lub npe hu hais tias lawv yog tus neeg sawv cev ntawm ib tug heev txawv hom. Thiab xwb, nyob rau hauv tsos Amphioxus thiab shellfish los mus sib tov yooj yim heev. Lawv muaj ib tug mos mos lub cev, uas yog tsis segmented. Tab sis Amphioxus nyob tsis pub dhau lub axial pob txha, hu ua ib tug chord. Shellfish yog deprived ntawm nws.

Yuav ua li cas yog ib qho nyob rau hauv cov khoom noj ntawm shellfish thiab Amphioxus? Ua ntej ntawm tag nrho cov, nws yog ib tug vaj tse, qhov twg lawv tau txais nws. Cov kab mob no nyob rau hauv cov dej. Amphioxus prefers ntiav dej ntawm tus seas. Nws yog semi-mus txoj kev ua neej, ib kawg ntawm lub cev faus nyob rau hauv cov xuab zeb.

Nyob ntawm seb lub hom shellfish yuav nyob rau hauv lub hiav txwv, dej tshiab, rau daim av. Piv txwv li, qwj, uas yog tus neeg sawv cev ntawm ib tug hauv chav kawm ntawv ntawm gastropods, yuav nrhiav tau nyob rau hauv lub hav zoov pem teb. Tab sis cephalopods nyob heev dua lwm yam nyob rau hauv lub seas thiab oceans. Yuav kom muaj xws li bivalve mussel, perlovitsy, Dracena, qwj nplais, oysters, nkoj cua nab tridaktny. Lawv ua neej nyob tsuas nyob rau hauv dej lub cev.

Yuav ua li cas yog ib qho nyob rau hauv cov khoom noj ntawm shellfish thiab Amphioxus

Amphioxus los ntawm txoj kev ntawm noj muaj feem zoo sib xws nrog lub bivalves. Gastropods txhuam tawm algae los ntawm lub substrate. Lawv ua li no los ntawm kev siv ib tug grater - tus nplaig them nrog horny cov hniav. Tab sis cephalopods yog active ua npua. Lawv tua cov ntses thiab crustaceans.

Txheej thaum ub chordates tsis nruj heev heev rau qhov no. Yuav ua li cas yog ib qho nyob rau hauv cov khoom noj ntawm Amphioxus thiab bivalves? Tag nrho cov heterotrophs uas nqus dej ntawm tshem tawm organic hais. Cov no yog hu ua lim thas.

Tus qauv ntawm lub digestive system

Yuav kom nrhiav tau tawm yog dab tsi tshwm sim nyob rau hauv cov khoom noj ntawm Amphioxus thiab shellfish yuav tsum xav txog cov qauv ntawm cov digestive system kabmob. Nws ris hom. Nyob rau hauv Amphioxus nruab nrog zom system yog sawv cev los ntawm ib tug los ntawm-plab, uas tas hepatic outgrowth. Nws pib qhov ncauj qhib ib puag ncig los ntawm tentacles. Cov tom ntej no division yog ib tug ua tsis taus pa permeated lub ntses chaw dim pa slits.

Nyob rau hauv shellfish digestive system kuj pib lub qhov ncauj, qhov quav thiab xaus. Cov yav tas yuav qhib rau hauv lub mantle kab noj hniav. Nruab nrab hnyuv ntaub ntawv ib tug extension, uas yog hu ua lub plab. Lwm cov piv txwv, uas qhia tau hais tias tag nrho cov khoom noj khoom haus Amphioxus thiab shellfish, yog cov nyob rau ntawm tshwj xeeb qog. Thaum xub thawj lawv yog sawv cev nkaus xwb los ntawm lub siab. Thiab shellfish kuj muaj qaub ncaug, uas ducts qhib mus rau hauv lub caj pas. Muaj pes tsawg leeg ntawm no cov ntaub ntawv uas los ntawm kawm txawv tej zaum yuav txawv. Piv txwv li, ib tug cephalopod, dua li enzymes nyob rau hauv cov qaub ncaug yog co toxins uas tua raug tsim txom.

fais fab mov

Tsis tau dab tsi yog ib qho nyob rau hauv cov khoom noj ntawm Amphioxus thiab bivalves? Qhov no yog cov zaub mov nws tus kheej. Raws li nws nkag mus rau hauv lub cev los ntawm pom, nws muaj xws li kab mob, cyanobacteria, ciliates, me me crustaceans, qe thiab kab ntawm lwm yam tsiaj. Lawv tag nrho cov lub hauv paus ntawm zooplankton thiab phytoplankton. Mineral tshuaj uas yog yaj nyob rau hauv dej, yog tseem absorbed los ntawm cov kab mob no. Qhov no txoj kev ntawm mov yog passive. Nyob rau hauv ntau txoj kev uas nws pom tau tias ib tug sedentary txoj kev ua neej Amphioxus thiab bivalves.

filtrators

Qhov tseem ceeb tshaj feature uas yuav txiav txim li cas yog ib qho nyob rau hauv cov khoom noj ntawm Amphioxus thiab shellfish, nws yog yeej filtering. Rau nws cov kev siv Siphons yog qwj. Cov no yog cov ob qhov nyob rau hauv lub rear ib feem ntawm lub cev, uas qhib rau hauv cov kab noj hniav ntawm tus mantle. Los ntawm lub sab siphon nws nkag mus rau hauv cov dej uas muaj tshem tawm hais ntawm khoom noj khoom haus. Thiab los ntawm lub sab saum toj twb faib nyob hauv cov ntshiab daim ntawv.

Filtering nyob rau hauv Amphioxus yog zoo txuas nrog lub ua tsis taus pa. Cilia nyob rau hauv lub caj pas thiab nyob rau hauv lub muab faib nruab nrab ntawm tus ntses chaw dim pa slits, muab ib qhov dej tam sim no. Nws kuj tshwm sim thiab nkev pauv.

Yog li ntawd, peb tau xav hais tias tag nrho cov khoom noj khoom haus Amphioxus thiab shellfish. Cov tsiaj no zoo sib xws nyob rau hauv cov nqe lus ntawm cov kev qauv ntawm cov digestive system kabmob. Nws ris hom. Nws comprises ib tubular txawv hnyuv thiab digestive caj pas. Kab mob uas peb ntsuam xyuas nyob rau hauv no tsab xov xwm no yog heterotrophic lim thas. Lawv pub on lub kab tshem tawm nyob rau hauv cov dej uas lawv kis tau los. Xws li ib tug txoj kev yog passive, ua ib tug sedentary tsiaj ntaub ntawv.