Evolution & Biodiversity

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1 The idea of many species descending from a common ancestor is called

A microevolution

B macroevolution

C co-evolution

D sexual dimorphism

2 A species of fish living in a coral reef changes the color of its scales (over generations) from yellow to blue. This is an example of

A microevolution

B macroevolution

C co-evolution

D homologous structures

3 All of the genes in a population is known as a

A gene dish

B gene pool

C homologous structure

D gene maximum

4 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

5 The bone structure of the human arm and the bone structure of the pectoral flipper of a porpoise are very similar. This is an example of

A co-evolution

B homologous structures

C analogous structures

D microevolution

6 True or False: A trait must give a certain population of a species an advantage (differential reproduction) for it to effect natural selection.

True

False

7 The ___________ are the organisms that crawled from the water & became modern tetrapods:

A Ray-finned fish

B Cartilaginous fish

C Lobe-finned fish

D Swim-bladderless fish

8 Which of the following is NOT a requirement for Natural Selection:

A The trait must be improved upon during the life of the population/organism

B The trait must be passed on from parent to offspring

C The trait must allow a reproductive benefit over the individuals within a population that lack the trait

D The trait must be variable within the population

9 Which of the following is an example of macroevolution:

A Over many generations a species of mice gets darker in color due to predation from owls and falcons

B Over many generations an off-shoot of catfish changes from a bottom-feeder to an aggressive hunter, no longer able to reproduce with the former catfish

C Over many generations a species changes in size from large to small to better fit in with the environment

D Over many generations a species of fish changes its scale color from yellow to blue

10 Corn (maize) originally appeared like a grassy bush, but over many thousands of generations mankind created the corn that is so widely used in the United States of today. This is an example of:

A Natural Selection

B Diversifying natural selection

C Sexual Selection

D Artificial Selection

11 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

12 True or False: Extinction of a species is a common & natural process.

True

False