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Theory Taking theHeat

Getting Out

Staying Alive

Relation-ships

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Jeopardy

To compensate for a high mortality rate, numerous offspring are produced.

What is Over-production?

The 2nd part of the theory that discusses the result of slight,

random mutations- which may or may not help an

organism survive.

What are “Inherited Variations”

He wrote the book, The Origin of the Species by Natural Selection after visiting the Galapagos

Islands.

Who is Charles Darwin?

The part of Darwin’s theory that describes the difficulty species have in finding food & avoiding

predation

What is “Struggle to Survive”?

What is “Natural Selection”?

The theory that explains the process by which organisms

with favorable traits survive & reproduce at a higher rate than

others without the favorable trait.

Desert hedgehogs, foxes and jackrabbits use these to cool

their blood as the breeze blows across their skin surface.

What are large “radiator” ears?

Body temperatures are regulated internally for these

animals. Sweating, shivering, panting, & throat fluttering

(birds) are actions used to help control their temperature.

What are Endotherms?

A behavioral adaptation in desert animals whose

daily cycle includes hunting at night and

resting during hot days.

What is being nocturnal?

DAILY DAILY DOUBLEDOUBLE

Desert animals whose light-colors help them blend in with the desert sand use this kind of protection.

What is concealing coloration or protective coloration?

Also known as “cold-blooded,” their body

temperature is affected by external conditions.

What are Ectotherms?

To re-locate to another place due to harsh conditions or to

find food.

What is Migration ?

What is Hibernation?

A period of inactivity when and animal’s body temperature and heart rate drop.

A period when plants drop their leaves due to harsh

temperatures, reduced sunlight, or drought.

What is Dormancy?

A period of inactivity, like hibernation, when desert animals retreat from heat

and/or lack of water. (hint: the spade foot toad or desert

tortoise

What is Estivation?

Plants that drop their leaves during the fall.

What are Deciduous Trees or Plants?

The subject of a case study in Manchester England around

the time of the Industrial Revolution. They were said to

change colors over several generation in response to trees

affected by pollution.What are Moths or Peppered

Moths?

What happened to the toothpickta when it could not

compete with the Tweezarians & Blade Runners for food.

What is Extinction?

They are random variations which may or may not affect

the organism’s ability to survive.

What are mutations?

Having the ability to survive in their environment.

What are adaptations or

what is biological fitness?

When these are introduced into an eco-system the natural balance may be disrupted

because they have no natural predators and are not

indigenous to the area.What are non-native or

invasive species?

The coyote and the jack rabbit have this kind of a relationship in which one is hunted and the other is

the hunter.What is Predator – Prey

relationship?

In this relationship, like the mistletoe and the mesquite, one benefits at the expense of the

other.

What is Parasitism

The red-tailed hawk, the coyote, and the rattlesnake all like to eat ground squirrels.

These predators have this kind of relationship.

What is a Competitive Relationship?

Desert Javelina and the mesquite tree have a helpful

relationship in which one eats the beans, and in turn the

animal spreads the seeds and helps them germinate through

digestion

What is mutualism?

The cactus wren benefits from the cholla cactus as the bird

builds its nest in it. The cactus gets nothing in return and is

not harmed.

What is commensalism?

FINAL JEOPARDY

?

Theory Application

When a new species forms due to

geographical, ecological or seasonal isolation.

What is SPECIATION?