Living Environment
Student Work
HARU Lesson #8
Lesson 8. Fertilization
Name:
Period ______
Laboratory Experience ##
Worth ### Lab Minutes
Date :
Bridge
What hormones are responsible for the female menstrual cycle? Why
does a woman go through this cycle every 28 or so days?
Objective:
Show the
journey of the
sperm and the
egg through
their respective
structures to a
point of
fertilization.
Essential
Question:
How does
internal
fertilization
occur?
Mini Lesson
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Living Environment
Student Work
HARU Lesson #8
Yesterday we looked at the hormones that were associated with the female reproduction. Males
have hormones that control their reproductive function as well but they do not need to work in a
negative feedback loop or control a very important cycle: they have testosterone that does it all.
Today you are going to create a “map” of internal fertilization. You will take your little imaginary
organisms and pair up with the other group already worked with. One group will represent the
male and one group will represent the female, which you have already chosen. You can use the
pictures supplied to represent the structures (organs) of the systems… yes they are . You may
use outside resources to help you if needed.
Work Period
Checklist for Completion:
 You need to identify the structure where meiosis takes place and place your separate
chromosome paper from lesson 5 in the appropriate place.
 You need to label each of the sex organs:
o Female: ovary, oviduct (Fallopian tubes), uterus, vagina, cervix
o Male: testes, vas deferens, prostrate gland, urethra
 You need to include the appropriate gamete in each system….. you will receive another
set of chromosomes from the protein synthesis lesson in unit 5. Use the appropriate
number of these to represent the sperm and the egg that will be fertilized.
 You need to use arrows to show the path of each gamete until it reaches the point of
fertilization or leaves the body and the journey that it takes (use blue arrows for the sperm
and red arrows for the egg).
 You need to show the sperm fertilizing the egg, and what the resulting structure will look
like in terms of chromosomes.
Summary
How does internal fertilization occur?
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HARU Lesson #8
Closing
So this shows internal fertilization. Is there such a thing as external fertilization? What would
that look like? What kinds of organisms might use that?
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Living Environment
Student Work
Name:
HARU Lesson #8
Period ______ Date :
Independent Practice
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Living Environment
Student Work
Name:
HARU Lesson #8
Period ______
Date :
Title of Lab: ______________________________________________________
Exploration
Use this space to record observations that relate to the question being investigated. Also record
researched facts that might relate to the investigation as well.
Question
Record your question that you will be investigating here. It is best to write it in a “Does
__________________ affect ________________? Format so the variables are easy to identify (first
line is always the independent variable, second line is always the dependent variable)
Identify your Variables
Independent Variable:
Dependent Variable:
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HARU Lesson #8
Prediction/Hypothesis
Based on the question that you asked, record your thoughts on what the result will be and why. Use
the “I think ___________________________________, because ______________.” format.
Experimental Design
List the materials that you are going to use and the procedure (steps) you are going to take to test your
hypothesis.
Materials:
Procedure:
Data Collection
Use this space to organize and collect your data. Remember, data can be qualitative (descriptions,
words, observations) as well as quantitative (numbers, values). Use both kinds of data when you can.
Organize your data into a table with a title, make a graph whenever you can, and use the variables to
help you do this!
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Student Work
HARU Lesson #8
Data Analysis
Put your data into words. This will be a relationship of your variables: what happened to the dependent
variable when you changed the independent variable?
Evaluation
This is where you talk about your experiment. Discuss how your results compare to your hypothesis:
do you agree or disagree with your original thoughts and use evidence from your experiment to back
this up. Second, discuss sources of error (at least 2), or things that could have gone wrong in your
experiment. Finally, develop a further investigation question: based on what you found out in this
experiment, what else do you wonder about? Again, use your “Does ________ affect __________”
format for this question.
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