Qhov Tseem Ceeb Qhov txawv - Protonephridia vs Metanephridia
Qhov sib txawv tseem ceeb ntawm Protonephridia thiab Metanephridia yog hom cell siv hauv kev tso tawm. Protonephridia yog tsim los ntawm ntau cov nplaim hluav taws uas yog ciliated hlwb siv hauv kev tso tawm. Metanephridia yog tsim los ntawm cov hlwb uas muaj qhov qhib sab hauv hu ua nephrostome thiab qhov qhib sab nraud hu ua nephridiopore.
Nephridia yog cov qauv tseem ceeb hauv kev tso tawm. Nws yog ib qho tseem ceeb kom tshem tawm cov tshuaj lom nitrogenous pov tseg ntawm lub cev. Yog li, raws li evolution, ntau hom hlwb tau kawm kom tau ua haujlwm raws li cov cell excretory.
YProtonephridia yog dab tsi?
Protonephridia yog lub khob zoo li cov qauv pom hauv cov kab mob uas muaj nyob rau hauv phyla Platyhelminthes, Nemertea, Rotifera, thiab qee qhov Chordates xws li lancelets. Protonephridia yog ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws ntawm cov hlwb uas hloov zuj zus mus ua haujlwm raws li cov hlwb excretory. Protonephridia tsim ib lub network ntawm tubules uas tsuas muaj qhov qhib sab nraud thiab tsis muaj qhov qhib sab hauv. Cov kawg ntawm protonephridia raug xa mus rau cov nplaim hluav taws. Cov nplaim hluav taws no tuaj yeem ua flagellated lossis ciliated. Flagellated nplaim hlwb hu ua Solenocytes feem ntau koom nrog ionoregulation. Ciliated nplaim hlwb koom nrog osmoregulation.
Daim duab 01: Protonephridia
Kev ntaus ntawm cilia hauv cov nplaim hluav taws tsim ib qho tam sim no tawm mus sab nraud. Vim li no, lub siab yog tsim nyob rau hauv qhov muag tsis pom qhov kawg ntawm lub raj. Vim lub siab no, cov kua khib nyiab yog rub los ntawm cov perforations mus rau hauv lub protonephridium. Tom qab ntawd cov dej khib nyiab yuav dhau mus rau sab nrauv, ntawm lub raj los ntawm nephridiopore. Protonephridia kuj tseem koom nrog kev tshem tawm cov dej ntau dhau ntawm lub cev thaum muab tso rau hauv ib puag ncig hypotonic.
Metanephridia yog dab tsi?
Metanephridia muaj nyob ntawm ntau cov kab mob tsis muaj zog xws li Annelids, Arthropods thiab Molluscs. Lawv raug xa mus raws li ib hom kab mob excretory. Metanephridia yog tsim los ntawm ciliated funnel zoo li qhib cov qauv. Cov qauv zoo li funnel no hu ua nephrostome. Lawv qhib rau lub coelom ntawm lub cev los ntawm ib tug duct. Cov kav dej no hnyav heev granularized thiab folded. Lub duct muaj qhov qhib rau lub cev sab nrauv.
Daim duab 02: Metanephridia
Cov tubules ciliated tau koom nrog hauv kev siv cov pov tseg tshuaj lom, dej, cov khoom noj hauv lub cev tawm hauv lub cev los ntawm nephrostomes. Cov pov tseg uas dhau los ntawm nephrostome yog tso tawm rau sab nrauv ntawm nephridiopore. Selective reabsorption yuav siv qhov chaw thawj cov zis hloov mus rau cov zis thib ob los ntawm kev pom.
Dab tsi zoo sib xws ntawm Protonephridia thiab Metanephridia?
- Ob leeg Protonephridia thiab Metanephridia koom nrog hauv kev tshem tawm cov pov tseg tshuaj lom thiab dej ntau hauv lub cev.
- Ob leeg Protonephridia thiab Metanephridia tuaj yeem ua rau ciliated.
- Ob lub qauv muaj lub network ntawm tubules.
- Ob lub qauv muaj qhov qhib rau sab nrauv hu ua nephridiopore uas cov kua dej pov tseg tau tso tawm.
Qhov txawv ntawm Protonephridia thiab Metanephridia yog dab tsi?
YProtonephridia vs Metanephridia |
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| Protonephridia yog tsim los ntawm ntau cov nplaim hluav taws uas yog ciliated lossis flagellated hlwb siv hauv kev tso tawm. | Metanephridia yog tsim los ntawm cov hlwb uas muaj qhov qhib sab hauv hu ua nephrostome thiab qhov qhib sab nraud hu ua nephridiopore. |
| Hom Cells koom nrog | |
| Cov nplaim hluav taws muaj nyob hauv protonephridia. | Nephrostomes muaj nyob rau hauv metanephridia. |
| Presence of Flagellated Cells | |
| Tam sim no hauv solenocytes | Tsis muaj |
| qauv | |
| Protonephridia yog cov khob zoo li lub khob. | Metanephridia yog cov qauv zoo li funnel. |
| xaiv Re absorption | |
| Kev xaiv reabsorption tsis tshwm sim hauv protonephridia. | Kev xaiv reabsorption tshwm sim hauv metanephridia. |
| Internal Opening | |
| qhib sab hauv tsis tuaj yeem nyob hauv protonephridia. | qhib sab hauv muaj nyob hauv metanephridia. |
| Glandularized Structures | |
| Glandularized qauv tsis tau pom nyob rau hauv protonephridia. | Glandularized qauv tau pom nyob rau hauv metanephridia. |
| Nyob rau hauv Perforations | |
| Perforations muaj nyob rau hauv protonephridia. | Perforations tsis nyob hauv metanephridia. |
| Examples | |
| Cov kab mob ntawm phyla Platyhelminthes, Nemertea, Rotifera thiab qee cov Chordates xws li lancelets muaj protonephridia. | Cov kab mob uas muaj nyob hauv phyla Annelida, Arthropoda thiab Mollusca, muaj metanephridia. |
Summary – Protonephridia vs Metanephridia
Protonephridial thiab Metanephridial systems yog ob lub hauv paus pib siv los ntawm cov kab mob rau cov txheej txheem excretion. Protonephridia yog tsim los ntawm ciliated los yog flagellated nplaim hlwb uas pab nyob rau hauv kev tso tawm cov dej khib nyiab ntawm lub nephridiopore. Metanephridia yog tsim los ntawm funnel-zoo li cov qauv hu ua nephrostome nrog rau sab hauv qhib uas sau cov dej khib nyiab los ntawm lub cev kab noj hniav. Cov kua dej pov tseg ces dhau los ntawm cov tubules thiab tso tawm ntawm nephrostome. Qhov no yog qhov txawv ntawm protonephridia thiab metanephridia.
