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Prirodopis 6.trida - Zahavci, Plostice, Hlisti

QuestionAnswer
Na jake tridy delime kmen zahavci? Meduzy, Korali & Sasanky, Nezmari
Kde se zahavci vyskytuji? Hlavne v morich, nekteri i ve sladke vode (nezmari)
Odkud je odvozen nazev zahavci? Od pritomnosti zahavych bunek
Co znamena, ze telo je paprscite soumerne? Znamena to, ze je muzeme rozdelit na vice nez dve shodne casti.
Jak zahavci dychaji? Celym povrchem tela.
Jak se zahavci rozmnozuji? Pohlavne i nepohlavne
Maji zahavci smyslove organy? Jen u meduz jsou jednoduche oci a ustroji pro udrzovani rovnovahy
K cemu slouzi zahave bunky zahavcu? K loveni potravy a k obrane.
Na jake tridy se deli kmen plostenci? Na Plostenky a Tasemnice, Motolice.
Kdo jsou plostenky? Jsou to vodni dravci.
Kdo jsou tasemnice? Jsou to vnitrni parazite.
Kde se plostenci vyskytuji? Ve vode a vlhku. Vnitrni parazite uvnitr tel obratlovcu.
Jake jsou hlavni znaky plostencu? Jejich telo je ploche, dvoustranne soumerne. Muzeme rozlisit predni a zadni cast tela.
Co znamena, ze telo je dvoustranne soumerne? Muzeme je rozdelit na dve stejne casti.
Co znamena schopnost regenerace a u ktereho kmenu je tato schopnost velka? U plostencu. Znamena to, ze pri poskozeni sveho tela jsou schopny nahradit poskozene casti tak, ze zcela dorostou.
Co je na povrchu tela plostencu a k cemu slouzi? Sliz, slouzi k pohybu.
Jak prijima potravu tasemnice? Celym povrchem tela.
Jak prijimaji potravu plostenci? Ustnim otvorem (krome tasemnice).
Jak dychaji plostenci? Celym povrchem tela
Jake smyslove organy maji plostenci? Oci a hmatove laloky. Parazite nemaji oci.
Jak se rozmnozuji plostenci? Jsou to obojetnici.
Rekni dva zastupce plostencu plostenka potocni, tasemnice dlouhoclenna, tasemnice bezbranna
Na jake tri rady se deli kmen hlisti? nitkovci, skrkavice, hadatka
Rekni dva zastupce skrkavice? Skrkavka detska, roup detsky
Kde se vyskytuji hlisti? Ve vode a pude nebo parazituji v tele rostlin, zivocichu i cloveka
Hlavni znaky kmene hlisti? Telo je protahle, valcovite, neni clankovane. Je kryte kutikulou.
Co je to kutikula? Silna ochrana vrstva tel hlistu.
Jak dychaji hlisti? NEDYCHAJI! Nepotrebuji kyslik
Jak se hlisti rozmnozuji? Maji oddelene pohlavi. Z oplozeneho vajicka vznika larva, a ta se pozdeji meni na dospeleho jedince
Created by: chrisketa
 

 



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