qib Taxonomic: phylum Nematoda; Qib ntawm kev tsim kho: cov khoom nruab nrog cev tau los ntawm peb cov ntaub so ntswg; symmetry: ob tog; hom plab: tiav; hom kab noj hniav ntawm lub cev uas tsis yog lub plab: pseudocoel; segmentation: absent; circulatory system: tam sim no; paj hlwb: pob paj me me (ganglia), ob lub paj hlwb; excretion: …
Puas nematodes segmented?
Hais txog morphology, nematodes yog feem ntau tsis yog ntunrog cylindrical cross-section nrog feem ntau ntawm lawv yog microscopic (tsawg dua ib millimeter ntev). Feem ntau ntawm cov tsiaj kuj muaj ib qho kev noj zaub mov ua tiav thiab lub paj hlwb tsim tau zoo uas tswj cov leeg ntawm tes.
Yuav ua li cas segmentation ua nematodes muaj?
Nyob zoo ib tsoom phooj ywg sawv daws, cov nematodes yog
bilaterally symmetrical. Lawv muab lawv lub npe los ntawm lawv lub cev puag ncig-seem. Tsis zoo li cov kab mob flatworms uas cov zaub mov thiab pov tseg nkag thiab tawm los ntawm tib qhov qhib, nematodes muaj lub plab zom mov tag.
Yog nematodes tsis-segmented?
Nematodes (roundworms) yog tsis-segmented worms (helminths) nrog elongate cylindrical lub cev. … Ascaris, Trichuris, thiab hookworms feem ntau ua ke ua ke raws li cov av kis tau tus mob helminths (STHs) vim muaj ib feem ntawm lawv lub neej voj voog.
Puas yog nematodes segmented lossis unsegmented voj voog ib?
Nematodes feem ntau yog spindle zoo li tus, bilaterallysymmetrical, unsegmented worms. Tsis muaj cilia lossis flagella, txawm hais tias qhov zoo li tsis yog-motile cilia tshwm sim hauv lub cev. Tsis muaj kab mob ua pa los yog cov kab mob hauv lub cev.
