Evolution and Biodiversity Final Exam Review

What does it mean when we say 2 different organisms are related? Ex: humans & chicks are related

• humans can become chickens

• chickens will become humans eventually

• they are identical to each other

• The have a common ancestor organism that they both came from

What was the one major flaw about Lamarck's theory of evolution?

• He believed evolution could only happen to certain animals

• He believed in "Aquired Traits" (that individuals change themselves over their lifetime)

• He didn't believe traits pass on from parent to offspring

• He didn't believe in evolution

How do scientists study evolution?

• Comparing the genetics of 2 organisms?

• Comparative Morphology (Looking at fossils)

• Looking at similarities between embryos

• All of the above!

I am comparing the bones of these animals and I notice that the structures I am looking at are?

• Vestigial Structures

• Fossils

• Homologous Structures

• Analogous structures

Because these bones are homologous structures... what do we know about these animals?

• They came from the same common ancestor

• It doesn't tell us anything

• They do not have a common ancestor

• They use these bones for the same function

Knowing Fossil B is 2 million years (yrs.) old, what do you know about Fossil D

• It is younger than 2 million yrs. old

• It is older than 2 million yrs. old

• We can't tell the age of Fossil A

• It is also 2 million yrs. old

Meiosis forms the cells needed to do this type of reproduction...

• Asexual Reproduction

• Sexual Reproduction

• Mitosis

• Binary Fission

A grizzly bear survives because he is well-adapted to his environment. When he reproduces he passes on those traits to his offspring. this process is called

• Natural Selection

• Selective Breeding

• Random mutations

• Variations in a species

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

With speed for animals faster is always better so a population will tend to get faster over time. This is an example of which type of natural selection?

• This is Directional Selection

• This is Stabilizing selection

• This is disruptive selection

Name a selective pressure that exists in the desert.

• High amounts of sand

• Being found in the west coast of the United States

• Lack of water (rainfall and rivers)