Unit8EvolutionQuiz#3

These two birds are related by an ancestor. What caused them to evolve into two new species using the evidence of this graphic.

• reproductive isolation

• extinction of the common ancestor

• convergent evolution

• geographic isolation from each other with different food sources

Which of these is not an adaption?

• elephants with large ears to help survive in their hot environment

• a beetle that is green to blend into the leaf color and avoid being eaten

• a bird mimics the sound of it's predator's enemy(mimicry)

• the inside of a human's mouth is reddish in color so that it blends in with the rest of the internal organs

Natural Selection involves variation, overproduction(reproduction), adaptations, and

• analogous structures

• selective pressures

• homologous structures

• vestigial pressures

What is the last stage leading to the formation of a new species........

• they physically look too different

• the chromosome numbers eventually become different

• reproductive isolation-they only reproduce within their group

• they live in different locations

These species have homologous structures. What conclusion can you draw from the diagram?

• these living things share a common ancestor

• these living things must share a similar environment

• the dolphin similarity connects them with an aquatic ancestor

• their embryology shows gills

When the gene flow or frequency changes significantly, a population is headed towards.....

• mutations

• geographic isolation

• cloning

• reproductive isolation

Looking at this diagram, which statement best describes a relationship between these organisms?

• the organisms in A are younger yet more advanced than B,C,and D

• A, B, C, and D organisms evolved at the same time

• A and B organisms most likely lived in the ocean

• Organisms A and B are probably older and more primative than C and D

The history of the evolution of species is called...

• divergenology

• phylogeny

• analogy

• radiology

Absolute or radiometric dating......

• the same and just as accurate as relative dating

• is used with other evolutionary evidence from other organisms

• measures the half-life of a radioactive material to accurately date the age of a fossil

• defines the order of evolutionary events

Identify all that cause genetic variations

• mutations

• sexual reproduction

• mitosis

• crossing over