Jellyfish yog qhov piv txwv loj tshaj ntawm holoplankton. Lawv nyob twj ywm hauv thaj chaw planktonic rau lub neej thiab tuaj yeem loj hlob loj li 8 ko taw, nrog tentacles txog 200 ko taw. Meroplankton yog qe thiab larvae ntawm yuav luag txhua hom ntses thiab benthic invertebrates.
Qhov txawv ntawm meroplankton thiab holoplankton yog dab tsi?
Nyob ntawm lawv lub neej voj voog, plankton raug txheeb xyuas tias yog holoplankton lossis meroplankton. Holoplankton yog cov kab mob uas yog planktonic lawv lub neej tag nrho, xws li jellyfish, krill, thiab copepods. Meroplankton, ntawm qhov tod tes, tsuas yog planktonic rau ib feem ntawm lawv lub neej voj voog.
Koj paub li cas holoplankton?
Holoplankton yog cov kab mob uas yog planktic (lawv nyob hauv kem dej thiab tsis tuaj yeem ua luam dej tawm tsam tam sim no) rau lawv lub neej tag nrho. Holoplankton tuaj yeem sib txawv nrog meroplankton, uas yog cov kab mob planktic uas siv ib feem ntawm lawv lub neej voj voog hauv thaj chaw benthic.
Is krill a holoplankton?
Holoplankton yog dab tsi? Holoplankton siv lawv lub neej tag nrho raws li ib feem ntawm cov plankton. Cov pab pawg no suav nrog krill, copepods, ntau yam pelagic (dawb ua luam dej) hiav txwv snails thiab slugs, salps, jellyfish thiab me me ntawm marine worms.
Yuav ua li cas yog tsiaj krill?
Krill yog lub npe nrov rau txhua tus tswvcuab ntawm cov crustacean xaj EuphausiaceaLawv nyob hauv tib chav tsiaj xws li crabs, lobsters thiab crayfish, nrog rau cw thiab woodlice. 82 hom krill tau piav qhia. Lawv loj hlob txog li 6 cm ntev thiab tuaj yeem nyob ntev txog 5 xyoos.
