Lub npe nrov: chelicerates, arachnids Zoo li txhua tus arthropods, lawv muaj ib lub cev segmented thiab segmented libs thiab tuab chitinous cuticle hu ua exoskeleton. Chelicerates muaj ob ntu ntawm lub cev; cephalothorax thiab plab. Lawv tsis muaj kav hlau txais xov, tab sis muaj rau khub ntawm appendages.
Yuav ua li cas txhua tus chelicerates muaj nyob rau hauv cov lus nug?
Lawv muaj tus qauv ntawm ob tagmata-lub taub hau thiab lub cev-nrog ua khub appendages ntawm feem ntau lossis txhua ntu ntu. Lawv tsis muaj qhov muag pom.
Vim li cas cov chelicerates txawv ntawm lwm cov arthropods?
Zoo li tag nrho cov arthropods, chelicerates muaj segmented lub cev nrog ob leeg ceg, tag nrho cov npog hauv cuticle ua los ntawm chitin thiab proteins. Txoj kev npaj chelicerate lub cev muaj ob tagmata, prosoma thiab opisthosoma, tshwj tsis yog tias mites tau poob qhov pom ntawm cov seem no.
Dab tsi yog qhov tshwj xeeb ntawm chelicerata?
Chelicerates muaj ob lub cev ntu (tagmenta) thiab rau khub ntawm appendages. Plaub khub ntawm appendages yog siv rau taug kev thiab ob (chelicerae thiab pedipalps) yog siv los ua qhov ncauj. Chelicerates tsis muaj mandibles thiab tsis muaj antennae.
Puas ob txhais ceg ua chelicerates?
Chelicerates muaj lub cev muab faib ua ob ntu, prosoma thiab opisthosoma. Lub promosa yog lub hauv ntej ntawm lub cev thiab nws muaj rau khub ntawm appendages nrog rau plaub khub ntawmtaug kev ob txhais ceg, ob lub puab tsaig sib koom hu ua chelicerae, thiab ob lub kav hlau txais xov zoo li pedipalps.
