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Geologic Time: Life On Earth
Test Description: Life on Earth, ESRT page 8-9
Instructions: Answer all questions to get your test result.
1) Trilobites like Cryptolithus and Phacops dominated this geologic Era
A
PreCambrian
B
Mesozoic
C
Paleozoic
D
Cenozoic
2) Which of the following groups of organism NEVER lived on Earth at the same time?
A
birds and graptolites
B
dinosaurs and mammals
C
birds and mammals
D
birds and dinosaurs
3) Pleurodictyum belongs to this group of organisms
A
vascular plants
B
mammals
C
corals
D
dinosaurs
4) Brachiopods are not good index fossils because
A
they only live in the ocean
B
they were alive for too long on the Earth
C
they do not contain any hard body parts
D
they were not alive long enough on Earth
5) Which large group of organisms was abundant during the Permian Period?
A
reptiles
B
grasses
C
mammals
D
birds
6) Which photosynthetic organism changed the atmosphere during the PreCambrian?
A
Brachiopods
B
Dinosaurs
C
Stromatolites
D
Coral
7) The earliest insects lived during this Period of the Paleozoic
A
Silurian
B
Cretaceous
C
Holocene
D
Triassic
8) This group of organisms went extinct 65 million years ago
A
dinosaurs
B
insects
C
mammals
D
trilobites
9) The group of animals dominating the most current geologic Era are
A
mammals
B
reptiles
C
fish
D
coral
10) Of all the species that once roamed Earth...
A
99.9% are extinct
B
less than half are extinct
C
less than 1% are extinct
D
around 10% are extinct
*select an answer for all questions
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