Cov txheej txheem:
- thawj cnidarian yog dab tsi?
- pab pawg twg cnidarians hloov zuj zus los ntawm?
- Cnidarians thawj zaug ua dab tsi?
- cnidarians tuaj qhov twg?
Video: Thaum twg cnidarians tshwm sim?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Fossil cnidarians tau pom nyob rau hauv pob zeb tsim kwv yees 580 lab xyoo dhau los, thiab lwm cov pob txha qhia tau tias corals tuaj yeem tshwm sim sai ua ntej 490 lab xyoo dhau los thiab muaj ntau haiv neeg ob peb lab. xyoo tom qab.
thawj cnidarian yog dab tsi?
Lwm txoj kev xav yog tias tus thawj cnidarian yog ib hom kab mob zoo li cov kab mob uas ua ntej ob qho tib si polyp thiab medusa Txawm li cas los xij, Hydrozoa tau suav tias yog qhov qub tshaj plaws ntawm cov chav kawm cnidarian, thiab Trachylina tau xav tias yog qhov kev txiav txim qub tshaj plaws ntawm pawg ntawd.
pab pawg twg cnidarians hloov zuj zus los ntawm?
Fortuitously, thawj ob cnidarian genomes yuav tsum tau sequenced los ntawm Anthozoa (Nematostella) thiab Hydrozoa (Hydra); Cov poj koob yawm txwv kawg ntawm ob chav kawm no yog qia cnidarian (Fig. 1).
Cnidarians thawj zaug ua dab tsi?
Cnidarians yog thawj tus tsiaj rau muaj cov leeg thiab paj hlwb tsim tus cwj pwmLawv kuj yog thawj tus muaj qhov ncauj thiab plab zom zaub mov. Peb kawm txog nematocysts thaum peb saib anemone ntes tus goby thiab ob anemones sib ntaus. Cnidarians tuaj ntau lub cev thiab muaj ntau txoj kev nyob.
cnidarians tuaj qhov twg?
Lub npe Cnidaria los los ntawm Greek lo lus "cnidos," uas txhais tau tias stinging nettle. Casually kov ntau cnidarians yuav ua kom paub tseeb tias lawv tau txais lawv lub npe thaum lawv cov nematocysts eject barbed threads tipped nrog tshuaj lom.
Pom zoo:
Puas yog kev tshwm sim lossis kev tshwm sim?
Reveling, kuj spelled reveling, txhais tau tias muaj lub sij hawm zoo, los yog zoo siab rau ib yam dab tsi. Yog tias koj tawm mus ua kev zoo siab rau koj kawm tiav thiab koj haus dej haus, tog thiab muaj lub sijhawm zoo, qhov no yog qhov piv txwv ntawm thaum koj rov qab los .
Puas yog nws tshwm sim lossis tshwm sim?
Raws li lub npe qhov txawv ntawm qhov tshwm sim thiab qhov tshwm sim. yog happenchance is a coincidental happen while happenstance is (countable) a chance or random event or random events . Puas yog ib lo lus? Ib qho xwm txheej tsis tau xav txog:
Puas muaj qhov sib txawv ntawm qhov tshwm sim thiab qhov tshwm sim?
Raws li lub npe qhov txawv ntawm qhov tshwm sim thiab qhov tshwm sim. yog happenchance is a coincidental happen while happenstance is (countable) a chance or random event or random events . Puas muaj lo lus tshwm sim? : a xwm txheej tshwj xeeb yog vim muaj caij nyoog Lawv tuaj ua ke los ntawm qhov tshwm sim .
Yuav ua li cas tshwm sim hauv kuv mob siab heev tshwm sim?
Thaum zaj yeeb yaj kiab tsis qhia meej raws li ib zaj dab neeg tseeb, nws yog tsim los ntawm cov xwm txheej hauv lub neej tiag tiag: yog, ntau tus neeg saib xyuas kev dag ntxias tau nyiag kev nplua nuj thiab kev ywj pheej ntawm suav tsis txheeb.
Cov siphons tshwm sim thiab tshwm sim nyob qhov twg?
Ntawm ob qhov qhib ntawm tom qab kawg ntawm clam. Qhov qhib qhov ntau dua yog cov siphon uas tshwm sim uas nqa dej mus rau hauv cov clam thiab qhov qhib qhov rooj ntau dua yog cov siphon uas tshwm sim uas cov khib nyiab & dej tawm . Cov kab mob dab tsi muaj tshwm sim thiab Excurrent siphon?
