Muaj pes tsawg lub cev khaubncaws sab nraud povtseg?
Muaj pes tsawg lub cev khaubncaws sab nraud povtseg?

Video: Muaj pes tsawg lub cev khaubncaws sab nraud povtseg?

Video: Muaj pes tsawg lub cev khaubncaws sab nraud povtseg?
Video: [Tổng Hợp] Khaub ncaws tshiab Trung Quốc zoo nkauj 2021 | PTX Channel 2024, Cuaj hlis
Anonim

ob

Ib yam li ntawd, tib neeg nug, peb lub cev txheej ntawm daim txhuam cev yog dab tsi?

Lub cev hom: Sponges muaj peb cev hom: asconoid, syconoid, thiab leuconoid. Asconoid daim txhuam cev yog tubular nrog lub hauv paus ncej hu ua spongocoel. Kev ntaus ntawm choanocyte flagella quab yuam dej mus rau hauv spongocoel dhau los ntawm qhov chaw hauv lub cev phab ntsa.

Tsis tas li, muaj pes tsawg txheej kab mob ua porifera muaj? ob txheej txheej kab mob

Ua kom pom qhov no, qib ntawm lub koom haum ua cov sponges muaj dab tsi?

Sponges muaj cellular- qib koom haum , lub ntsiab lus tias lawv cov cell tshwj xeeb yog li cov cell sib txawv ua haujlwm sib txawv, tab sis cov cell zoo sib xws tsis tau koom ua ke rau hauv cov ntaub so ntswg thiab lub cev yog ib qho kev sib sau ua ke ntawm ntau hom sib txawv.

Cov chav kawm ntawm sponges twg yog txhua lub cev pom?

Txawm hais tias feem ntau ntawm daim txhuam cev nyob hauv marinehabitts, ib tsev neeg, Spongillidae, yog pom hauv dej tshiab. Calcarea, Hexactinellida, Demospongiae, thiab Homoscleromorphamake nce plaub chav kawm ntawm sponges ; txhua yam raug cais raws qhov muaj lossis muaj pes tsawg leeg ntawm nws cov spicules lossisspongin.

Pom zoo: