Transcript What is “Natural Selection”?

Jeopardy
Theory
Taking the
Heat
Good
Behavior
Staying
Alive
Relationships
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To compensate for a high
mortality rate, numerous
offspring are produced.
What is Over-production?
What are
“Inherited
Variations”
nd
2
The
part of the theory that
discusses the result of slight,
random mutations- which
may or may not help an
organism survive.
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”?
The theory that explains the
process by which organisms
with favorable traits survive &
reproduce at a higher rate than
others without the favorable
trait.
What is “Natural Selection”?
The purpose of desert
adaptations that
include small or waxy
leaves and dry flower
petals.
What is conserving water?
http://pinterest.com/gjacqui/australian-wild-flowers/
http://www.squidoo.com/creosote-bush
http://en.wikipedia.org/wiki/Mesquite
Body temperatures are regulated
internally for these animals.
Sweating, shivering, & panting are
actions used to help control their
temperature.
What are Endotherms?
A behavioral
adaptation in
desert animals
whose daily cycle
What
is
includes hunting at
being
night and resting
nocturnal?
during hot days.
DAILY
DOUBLE
Desert animals whose lightcolors help them blend in
with the desert sand use this
kind of protection.
What is
concealing
coloration or
camouflage?
Also known as “coldblooded,” 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 ?
A period of inactivity when an
animal’s body temperature and
heart rate drop.
What is
Hibernation?
A period when
plants drop their
leaves due to harsh
temperatures,
reduced sunlight, or
drought.
What is Dormancy?
What is
Estivation?
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
Wind, water, animals, &
sticking are helpful ways
that a plant species ensure
successful reproductions
What is seed dispersal?
When animals on Darwinia,
or other islands, become
separated from other
members of their species.
What is
This also includes
isolation
separation due to
or
mountains, canyons, or
geological
rivers.
isolation?
Every member of the
species has died.
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
What is a
have this kind of
Competitive
relationship.
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
What is
harmed.
commensalism?
FINAL
JEOPARDY
Theory Application
?
When a new species
forms due to
geographical, ecological
or seasonal isolation.
What is SPECIATION?