2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Me ntsis paub txog hexactinellid kev loj hlob thiab kev loj hlob. Cov phev raug coj mus rau hauv lub cev nrog dej, thiab tom qab ntawd yuav tsum ua rau lawv txoj kev mus rau cov qe hauv lub cev. … Hexactinellids paub txog prolific budding. Cov iav sponges yog cov lim dej ntshiab huv.
daim sponges ua plees ua yi li cas?
Sponges reproduce by ob leeg asexual and sexual means. Feem ntau cov poriferans uas yug me nyuam los ntawm kev sib deev yog hermaphroditic thiab tsim qe thiab phev thaum sib txawv. Cov phev feem ntau "tshaj tawm" rau hauv cov dej. … Hauv cov poj niam, cov phev raug thauj mus rau qe los ntawm cov hlwb tshwj xeeb hu ua archaeocytes.
Hexactinellida yog dab tsi?
Deepwater marine sponges nrog lub khob pob txha, thiab feem ntau yog rau rays; txawv txawv vim lawv ntau cov ntaub so ntswg thiab muaj peev xwm ua hluav taws xob teeb liab thaum tsis muaj qab haus huv.
Hexactinellida yog dab tsi?
iav sponges hauv chav kawm Hexactinellida yog cov tsiaj feem ntau pom hauv dej hiav txwv tob. Lawv cov ntaub so ntswg muaj cov qauv zoo li iav, hu ua spicules, uas yog ua los ntawm silica(li no lawv lub npe).
Tus yam ntxwv ntawm Hexactinellida yog dab tsi?
Hexactinellida yog tus cwj pwm los ntawm siliceous hexactine (rau-taw tes) spicules, ua rau lawv yog chav kawm thib ob hauv pab pawg loj ntawm Silicea. Lawv kuj tsim ob lub cev sib txawv:sycon thiab leucon.
Pom zoo:
Yuav siv lub pob yug me nyuam li cas?
Tuav pob yug rau pem hauv ntej ntawm koj lub cev. Khoov koj lub hauv caug thiab squat, zoo li yog tias koj tab tom yuav zaum hauv lub rooj zaum xav. Thaum koj squat, tsa lub npas yug saum taub hau. Tuav nws txoj haujlwm li ntawm 5 suav thiab rov qab mus rau qhov chaw pib.
Yuav ua li cas yug me nyuam hauv tib neeg?
1. Fertilization: Cov phev thiab qe tsim ib Zygote. Thaum muaj kev sib deev kev sib deev, qee cov phev ejaculated los ntawm tus txiv neej noov ua luam dej los ntawm tus poj niam qhov chaw mos thiab lub tsev menyuam mus rau ib qho oocyte (qe cell) floating nyob rau hauv ib lub uterine hlab.
Yuav ua li cas thiaj tau txais daim ntawv cog lus tom qab yug me nyuam hauv california?
Txoj Cai Rau Daim Ntawv Pom Zoo Postnuptial Siv Tau Ua ntej, tsis muaj ob tog yuav tsum raug yuam lossis yuam kom kos npe rau daim ntawv cog lus; ob tog yuav tsum kos npe rau ntawm lawv tus kheej lub siab nyiam. Qhov thib ob, daim ntawv cog lus yuav tsum yog sau rau hauv, muaj kos npe ntawm ob tog thiab yuav tsum tau sau npe.
Vim li cas cov me nyuam yug los tseem yug los puv sij hawm?
Ib tug tseem yug los yog kev tuag ntawm tus menyuam hauv plab tom qab lub lim tiam 20 ntawm leej niam cev xeeb tub. Yog vim li cas mus tsis piavrau 1/3 ntawm rooj plaub. Lwm 2/3 tej zaum yuav tshwm sim los ntawm cov teeb meem ntawm cov placenta los yog txoj hlab ntaws, ntshav siab, kab mob, kev yug me nyuam, los yog kev ua neej tsis zoo.
Bred txhais li cas thaum yug thiab yug me nyuam?
hais tias tus neeg yug thiab loj hlob hauv ib qho chaw tshwj xeeb, thiab muaj tus cwj pwm ntawm ib tus neeg nyob ntawd: Nws yog Parisian yug thiab yug me nyuam. yug thiab yug txhais li cas? -siv xa mus rau qhov chaw yug thiab menyuam yaus tshwm sim Nws yog neeg Mev yug thiab yug me nyuam.
