Download Evolution

1.Mouths are quiet.
2.Homework in your folder.
3.Begin the quick review section of your
notes.
4.Raise your hand if you need
something.
Quick Review
1. Type of current that changes direction :
alternating current
2. The amount of force pushing electrons
through a wire:
voltage
3. Characteristic of electricity that must be
changed before it can be sent long
distances:
voltage
Quick Review
4. Device that increases or decreases the
voltage of electricity:
transformer
5. Which has a higher resistance, a thick or
thin wire?
Thin wire. Why?
It is more difficult for electrons to flow through
a thin wire.
Ecosystems
and
Adaptations
Lesson 6.7 – Evolution
I can explain how adaptations impact an organism’s ability to reproduce and how
this leads to natural selection. (3a)
1. When the traits
of a species to
change over time
=
evolution
2. Explanation for
why evolution
occurs =
natural selection
I can explain how adaptations impact an organism’s ability to reproduce and how
this leads to natural selection. (3a)
a. Created by
Charles Darwin.
b. Natural selection
occurs when an
environment changes.
c. The organisms that
have adaptations that
help them survive the
changes are most likely to
survive and reproduce.
d. Nature “selects” the
organisms that are best
adapted.
I can explain how adaptations impact an organism’s ability to reproduce and how
this leads to natural selection. (3a)
3. Natural selection can
cause evolution because
within a species, members
of the species are not
exactly alike and have
differences in their traits =
variations
4. Natural selection can
lead to formation of a
new species. The new
species cannot
reproduce with the old
species.
I can explain how adaptations impact an organism’s ability to reproduce and how
this leads to natural selection. (3a)
5. If no members of the
species have variations
that allow them to survive
in a changed
environment, the species
can permanently die out
= extinction
Guided
Practice
WORK WITH US…NOT
AHEAD OF US!
I can explain how adaptations impact an organism’s ability to
reproduce and how this leads to natural selection. (3a)
1.
2.
3.
Rules
If you have more than
ONE demerit you are
not allow to
participate.
You must follow ALL
directions.
It must be SILENT during
the activity.
I-N-D-E-P-E-N-D-E-N-T
PRACTICE
Do you know what that
means?
Exit Ticket
(5 Questions)
1. Who created the theory of
evolution and natural selection?
A. Rudolf Virchow
B. Charles Darwin
C. Joseph Kralik
D. Timothy Riggins
2. Which term best describes a
specially developed characteristic
that enables an organism to live in
a specific environment?
A. adaptations
B. natural selection
C. Survival of the fittest
D. variations
3. What will likely happen to a species
that lacks the variation necessary
to adapt to a changing
environment?
A. It will undergo many genetic
mutations.
B. It will become extinct over time.
C. It will begin to reproduce
asexually.
D. It will become resistant to disease.
4. Which of these supports the theory of
natural selection?
A. All organisms produce more offspring
than can survive.
B.
Organisms live in harmony with one
another despite limited resources.
C. Organisms with favorable traits are
more likely to die.
D. Over time advantageous traits will be
found in more of the population.
5. The Bird of Paradise is a species that has been observed
in the jungles of New Guinea. In an attempt to attract
females, the males shake their bodies and sometimes
hang upside down to show off their bright colors and
long feathers. Females generally chose to mate with
the “showiest” males. Which concept is supported by
these observations?
A.
An organism’s individual physical growth can be
dependent on behaviors of the population.
B.
Asexual reproduction can lead to demanding
courtship displays to attract mates for diversity.
C.
Behaviors that lead to reproductive success have
evolved in species.
D.
Strange and vibrant courtship behaviors lead to
extinction of particular species.