nab vs worm
Ob lo lus nab thiab worm tsis zoo ib yam, tab sis qee zaum lawv zoo sib xws, tshwj xeeb tshaj yog thaum tus nab me. Qhov tseeb, muaj ntau zaus uas tib neeg sim tua cov kab mob dawb huv, vim tias cov tsiaj tsis zoo raug suav tias yog nab. Nws tshwm sim rau lwm txoj hauv kev ib yam nkaus, thaum cov nab me me tawm tsam tib neeg thaum cov tsiaj raug saib xyuas tsis tu ncua xav tias lawv yog worms. Yog li ntawd, yuav tsum paub txog qhov txawv ntawm nab thiab worms.
nab
Lawv yog cov tsiaj reptiles tsis muaj ceg, thiab lawv hloov zuj zus los ntawm cov tsiaj reptilian tetrapods ua ntej 110 lab xyoo. Muaj ntau ntau hom kev sau se nrog 2,900 hom. Tsuas yog Antarctica, nab yog ib txwm nyob rau yuav luag txhua lub tebchaws. Snakes tsis muaj ceg tawv, tab sis cov ceg tawv ntawm cov ceg ntoo muaj nyob hauv cov pythons, qhia tias lawv yog thawj qhov kev hloov pauv li nab. Lub cev ntev ntawm nab sib txawv nyob rau hauv ntau yam, pib ntawm 10-centimeter ntev xov nab, mus txog 8-meter ntev anaconda. Cov nplai ntawm daim tawv nqaij npog tag nrho lub cev. Tsis tas li ntawd, cov nplai no muaj xim zoo nkauj thiab muab cov nab ntawm txhua hom kev sib txawv. Ntxiv mus, nab nplais yog ib qho tseem ceeb hauv kev txheeb xyuas lawv cov tsiaj raws li tus naj npawb ntawm cov nplai nyob hauv kab yog cov yam ntxwv rau txhua hom. Lawv nyob hauv ob qho tib si terrestrial thiab dej nyob. Txawm li cas los xij, muaj cov kab nab uas tuaj yeem hla huab cua ntawm cov ntoo yam tsis tau hla av. Predation yog tib txoj kev pub zaub mov rau nab, uas lawv tau tsim ntau hom kev sib txawv los immobilize preys. Lawv feem ntau tsis yog venomous, tab sis venomous nab tuaj yeem tua yuav luag txhua tus tsiaj. Australia muaj feem ntau ntawm kaum tus nab venomous hauv ntiaj teb. Nab tsis zom lawv cov zaub mov, tab sis nqos raws li nws yog thiab cia lub plab zom mov. Lawv tuaj yeem txhawb nqa hauv cov suab puam thiab cov hav zoov. Hauv cov suab puam, qhov twg dej tsis tau yooj yim, nab nqus tag nrho cov dej hauv lawv cov tsiaj nyeg lub cev. Tsis tas li ntawd, lawv cov khoom excretory yog uric acid, uas tsis muaj dej. Nab yog cov khoom tseem ceeb ntawm ib puag ncig raws li lawv lub luag haujlwm ecological. Tsis tas li ntawd, cov neeg ntawm East thiab South-East Asian lub teb chaws npaj nab rau lawv noj.
Npaj
worm yog ib lo lus siv xoob los xa mus rau feem ntau ntawm cov invertebrates nrog lub cev elongated. Kab mob muaj nyob rau hauv ntau invertebrate phyla viz. Platyhelminthes (Flatworms), Nematoda (roundworms), Arthopoda (caterpillars, grubs, thiab maggots), Annelida (Earthworms), Chaetognatha (xub kab), thiab ntau lwm tus. Nws yog ib qho nyuaj me ntsis kom tuaj nrog tus naj npawb ntawm hom worms, tab sis nws yooj yim mus txog ntau pua txhiab hom. Qhov ntawd txhais tau hais tias hom kev sib txawv ntawm worms yog siab heev, thiab nws tuaj yeem ua tau pom los ntawm kev soj ntsuam ntau yam ntawm lawv qhov ntau thiab tsawg. Cov worms me tshaj plaws yog microscopic thaum cov tsiaj ntev tshaj plaws (marine Nemerteans) ntev txog 55 meters. Cov nyob hauv ecological niches ntawm worms muaj dav. Lawv tuaj yeem nkag mus rau sab hauv ntawm lwm yam tsiaj xws li kab mob cab, thaum cov kab mob uas tsis yog kab mob tuaj yeem nyob txhua qhov chaw suav nrog av, burrows, dej tshiab, lossis dej ntsev. Ntau yam kev noj zaub mov zoo ntawm cov kab cab txawv nrog txhua yam khoom noj uas muaj nyob hauv lawv. Muaj cov cab uas muaj kab mob parasitic, herbivorous, carnivorous, cannibalistic, lossis omnivorous noj zaub mov. Cov kab mob ua ib pawg loj heev ntawm cov neeg tsis muaj zog, lawv ua lub luag haujlwm loj hauv feem ntau ntawm cov txheej txheem ntawm ecosystem.
Dab tsi yog qhov txawv ntawm Nab thiab Kab ?
• Nab yog ib pawg vertebrate thaum worms yog invertebrates. Yog li ntawd, nab muaj lub cev muaj zog dua piv rau cov cab.
• worms muaj ntau haiv neeg ntau dua li nab.
• Kab ntsig muaj zaub mov ntau dua li nab.
• Qhov sib txawv ntawm cov cab no ntau dua piv rau cov nab.
• Nab muaj nplai tab sis tsis yog kab nab.
• Nab tuaj yeem yog venomous tab sis tsis yog cab.
