Reproduction: One Goal- TWO
Methods Web Assignment
Is it better to have genes from two parents? Or just one? In this investigation, you will learn
two different methods that living things reproduce themselves.
You will also learn that these methods of reproduction have advantages and drawbacks for
the living thing.
This assignment can be completed online, if you want to make your own free account. If you
choose to save your work, you must register and enter an email address.
If you do not want to register, simply “PREVIEW” the activity, and write your responses on
the paper as you go through each screen.
You can submit your comments online on my website too:
www.mrsmotley.weebly.com
or email: emotley@colonial.k12.de.us
Follow these directions to access the activity:
• Open Firefox/chrome and type pbslearningmedia.org in the
address bar
* Click- Log in- student log-in, and create a free account (optional)
• Type “reproduction one goal” in the search bar
• Click on 7th grade box (upper-left side of page)
• Select “Reproduction: One Goal, Two Methods” (it has a picture of elephants)
• If you are having trouble, you can also find a link on the class website.,
(mrsmotley.weebly.com- Mot’s thoughts)
Note: You will be writing all notes from this online lesson on this sheet,but if you do type it online,
you have to register first. It is easy,just sign up for free account.
You should NOT need to sign in, but if you want to type answers, you do.
Once you find “ONE GOAL-2 METHODS”, Click launch.
1. Click on “Launch” on the picture of elephants.
Read each screen and stop where indicated (for movies, etc.).
You may also click on highlighted words to get definitions.
Read each screen carefully and complete the activities to help you learn about the
different methods of reproduction.
Turn in THIS ASSIGNMENT or the one you typed online.
ASSIGNMENT TO BE COMPLETED BY YOU( & a partner if you want):
NAME:_________________________&_________________________ CLASS:___________
EACH SET OF QUESTIONS GOES WITH A SPECIFIC SCREEN.
SCREEN 3- “What you will learn”
1. Write down the 3 big ideas that the lesson will teach you about:
A.
B.
C.
2. What is 1 of the 3 strategies you are supposed to be using in the activity?
A.____________________________________________________________
3. FILL IN THE ANCTICIPATION GUIDE WITH HOW WELL YOU KNOW THESE WORDS
NOW: (check)
Before Lesson
After Lesson
Word
No
Think I can use
No
Think I can use Change in
clue
I know it in a
clue
I
it in a
answer: (from
sentence
know sentence
before to after
lesson)
Offspring
Clones
Genes
Natural
Selection
Asexual
Reproduction
Sexual
Reproduction
Go to SCREEN 4(click next)
Answer the question in the box:
SCREEN 5: Watch the video.
1. How does an AMOEBA reproduce itself according to this screen?
2. What is surprising about the way the lizard reproduces?
3. What question does the scientist ask at the end of the video ?
4. In terms of species survival, do you think this method of reproduction is helpful to the
lizard? Explain why or why not….
Click “NEXT to go to screen
SCREEN 6:
In what ways do some traits help a species survive? Write down some examples you have
learned in this activity, or know about from your own experiences in the box below:
Some inherited traits that help an offspring survive are…….think of some of them and explain
how the trait helps the organism survive.!!!
SCREEN 7:
1. What is the name for an offspring that is an exact copy of its parent?
2. What makes the lizard you saw in this video so unusual?
3. Click VIEW to Watch the video about the fish-
3.
SCREEN 8: Click on the VIEW DOCUMENT TAB to learn about the two types of
reproduction and their advantages and disadvantages. Then answer this question:
1. After you have finished reading the passage, describe in your own words what
natural selection means in the box below. Give one example of how an animal’s
environment can influence the method it uses to reproduce.
SCREEN 9: COMPARE IT! Fill in the chart below and show what you learned about the
differences between the 2 types of reproduction:
SCREEN 10: MATCH IT! FILL IN THE CHART BELOW.
CREEN 10: MATCH IT!
SCREEN 10- MATCH IT!
GO BACK AND FILL IN THE ANTICIPATION GUIDE FROM SCREEN 3:
FINAL ASSIGNMENT: You may choose ONE of the options below- You can also choose the
FINAL ASSIGNMENT ON THE WEBSITE TOO.
CHOICE 1
CHOICE 2
1. DO YOU CLAIM IT IS BETTER FOR A RESEARCH A SPECIES THAT
SPECIES TO REPRODUCE
REPRODUCES BY ASEXUAL OR SEXUAL
SEXUALLY OR ASEXUALLY? Using
REPRODUCTION.
what you have learned about the two
types of reproduction in this activity,
1. Explain in a written response, how it
write a response in the CLAIMreproduces.
EVIDENCE-REASONING format that
2. In your response explain how its
explains your viewpoint.
reproductive strategies are helpful to
passing down genes and helping the living
-STATE THE CLAIM-Your viewpoint
thing survive.
-Your evidence that backs up your viewpoint.
3. Explain any disadvantages to that type of
-Include at least 2 advantages of the type of
reproduction… for example,
reproduction (evidence)
*If the living thing you chose reproduces
-Include an example of an organism that benefits
ASEXUALLY, explain one way that its
from that type of reproduction in your response
reproduction might be a drawback for its
and
survival.
BE SURE TO EXPLAIN how it benefits from it.
(evidence)
-Remember- Your reasoning is based upon the
scientific principle of reproduction:
“For any species to continue, its living members
need to create offspring. They do this through a
process called reproduction.
Reproduction—the process of having children or
offspring—is a highly important step in the life
cycle of all living things. Without it, entire species
would disappear as their individual members died
off”
Screen 4: read and answer
How many parents are there in asexual reproduction?
Why might it be beneficial (good) for an organism to have exact copies of itself?
(Your opinion)
Screen 5: read and answer
What is an amoeba?
How does it reproduce? (Describe it; don’t just say “asexually”)
WATCH VIDEO 1: Asexual Reproducers (Find link on class website if it doesn’t work)
What do we call an offspring that is an exact copy of its parent?
What makes the Lizard species from the video so unusual?
Screen 6: read and answer
What are 2 traits that parents pass on to their offspring in humans?
What are 2 traits that parents pass on to their offspring in lizards?
What is one trait that could affect an organism’s ability to survive?
Screen 7: read and answer
WATCH VIDEO 2: Why Sexual Reproduction? (Find link on class website if needed)
Why does the black spot disease spread more easily to the asexual reproducers?
Screen 8: read page and read article (link on screen)
Describe in your own words what natural selection means.
Why is sexual reproduction considered a “biological tradeoff”?
Do most species reproduce sexually or asexually?
SKIP THE NEXT 2 SCREENS (9 and 10), BUT COMPLETE THE FOLLOWING ACTIVITIES
Sexual vs. Asexual Reproduction:
Place each description on the correct side of the T-chart (you can write just the number).
Sexual reproduction Asexual reproduction
1) Offspring has 2 parents
2) Genes passed from generation to generation are diluted or weakened
3) Offspring has 1 parent
4) Each generation is the same as the one before
5) Genes passed from generation to generation are not diluted or weakened
6) Strength in variety of offspring
7) Each generation is different than the one before
8) Species may be better able to avoid catching a disease
9) Strength in numbers of offspring
10) Species may be less able to avoid catching a disease
Vocabulary:
Place each word in the correct blank to complete the sentence.
Genes Traits Natural selection Reproduction Clones Offspring
1. Hair color and height are examples of __________________ in humans.
2. __________________ differ from the previous generation when their parents reproduce
sexually.
3. __________________, which are found in almost every cell of our body, affect the way
we look and act.
4. Individuals that carry the genes of only one parent are called __________________.
5. ___________________ is the process that all living things use in hopes of continuing their
species.
6. ___________________ explains why some species survive while others die