Unit 7: Quiz #2

Grade:«grade»

Subject:Aquatic Science

Date:«date»

1 Which of the following is the geological time that we are currently in:

A Pleistocene

B Oligocene

C Pliocene

D Holocene

2 Which of the following demonstrates sexual dimorphism

A B

C D

3 Most genetic mutations

A are helpful to a species

B are harmful to a species

C have no effect on a species

D give most species super powers

4 Homo sapiens have been on the planet for approximately:

A 5,000 years

B 106,000 years

C 1.8 million years

D 200 million years

5 True or False: Life began in the Cambrian Period.

True

False

6 The fossils of Tiktaalik roseae, a fish-like animal that crawled out of the water, is the transitional species between fish and modern tetrapods. This species existed in the __________ period.

A Cambrian

B Silurian

C Devonian

D Permian

7 Which of the following organisms would likely be found during the Cambrian Period:

A a cuddlefish

B an octopus

C a brittle star

D a lamprey

8 During which time period did modern humans evolve to become the most dominant species on the planet:

A Tertiary

B Quaternary

C Jurrassic

D Cretaceous

9 During which of the following time periods did 96% of the current species die off:

A Permian

B Devonian

C Cambrian

D Quaternary

10 The end of the __________ Period saw the end of the dinosaurs, ammonites, and many other species.

A Permian

B Triassic

C Jurassic

D Cretaceous

11 During which time period did active predation begin:

A Silurian

B Devonian

C Ordovician

D Cambrian

12 Radiometric dating involves the loss of which of the following from an atom:

A proton

B electron

C neurtron

D neutrino

13 The ostracoderms (shell-skinned) were the first known vertebrates. They developed in which of the following periods:

A Cambrian

B Silurian

C Tertiary

D Ordovician

14 During which time period did mammals radiate back to the water:

A Jurassic

B Cretaceous

C Tertiary

D Quaternary

15 After a mass extinction the empty niches will eventually (1 to 10 million years) be filled by new species. This is called

A adaptive radiation

B homologous structures

C analogous structures

D repressive radiation

16 ________ of all species that have every existed are now extinct

A 15%

B 55%

C 86%

D 99%

17 The Silurian period is characterized by stability within the environment & the first appearance of which of the following:

A chordates

B vertebrates

C gnathostomes

D craniates

18 Which of the following time periods involved the evolution of tetrapods & their invasion of the terrestrial environment:

A Devonian

B Silurian

C Carboniferous

D Triassic

19 The Earth is approximately:

A 3.55 million years old (myo)

B 3.55 billion years old (byo)

C 4.57 million years old (myo)

D 4.57 billion years old (byo)

20 Mammals & avians (birds) developed during which of the following periods:

A Triassic

B Jurassic

C Carboniferous

D Cretaceous

21 Which of the following is not a type of mammal that developed during the Cretaceous Period:

A monotreme

B marsupial

C precocial

D placental