
Elu areng Maal
Authored by Milli mallikas
Biology
University
Used 22+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Maa teke. Maakoore tardumine. Intensiivne meteoriitide pommitus. Tekkisid atmosfäär, ookeanid ja mandrid. Algas mandrite triiv. Elu teke – ainuraksed prokarüoodid.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Fotosünteesivate organismide (bakterite) ilmumine. Tekkis vaba hapnik ja osoonikiht. Eukarüootide ilmumine. Kujunes välja meioos ja suguline paljunemine. Hulkraksete organismide teke.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Hulkraksete loomade kiire areng, välisskeletiga loomade valitsemisaeg. Esimesed keelikloomad. Taimedest vetikad.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Selgrootute loomade kiire areng. Varaseimad keelikloomad: süstikkalad, kellest arenesid lõuatud kalad.
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Paljud selgrootuid mereloomi. Lõuatutest kaladest arenesid lõugadega kõhrkalad. Soontaimed asustasid maismaa.
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Selgroogsed jõuavad maismaale: kahepaiksete areng. Kõhrkalade valitsemisaeg. Esimesed luukalad. Kollad, osjad, sõnajalad.
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Palju kahepaiksed ja putukaid, esimesed roomajad. Selgrootutest domineerisid foraminifeerid e kambrilised (rühm ainurakseid). Maismaataimestiku kiire levik.
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