Author: Windows User

Name:____________________

Life Cycles

Part 1:
Exploring an Organism’s Life
What organism did you receive?________________________________

Talk with your group about how your organism changes over its lifetime.

Draw and label your organism at 4 to 6 different stages in its life. This will be your model.

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4	5	6

Comparing the size of your organism over its lifetime:
Does the organism stay the same size over its lifetime? Yes No
Did the organism change size for every stage of its life? Yes No
If No: Two stages where the organism stays the same size are: stage ___ and stage ___.
Two stages in which the organism changes size are: stage ___ and stage ___. (circle the stage that is bigger)
Comparing Similar Organisms
(Your teacher will assign you a partner group to share with.)
What organisms did your partner group receive?___________________
Compare the sizes of your organisms:
A/an ________________ is smaller than / bigger than / the same as a/an __________________________.
Have one group share what they drew for the stages in their model (question 2).
Have the other group share what they drew for their stages in their model (question 2).
List similarities between your two models: (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________

Circle One

Circle One

Your Organism

Circle One

Partner Group’s Organism

List differences between your two models: (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________
Did the __________________________ change size for every stage of its life? Yes No
If No: Two stages where the organism stays the same size are: stage ___ and stage ___.
Two stages in which a/an ____________________ changes size are stage ___ and stage ___. (circle the stage that is bigger)
List if there is anything you would like to change or add to your model (question 2): (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________
Part 2:
Class Discussion
*Have a class discussion on how to compare plants and animals.
Comparing Different Organisms
(Your teacher will assign you a second partner group to share with.)
What organism did your partner group receive?___________________
Compare the sizes of your organisms:
A/an ___________________ is smaller than / bigger than / the same as a/an __________________________.

Partner Group’s Organism

Circle One

Partner Group’s Organism

Partner Group’s Organism

Your Organism

Circle One

Partner Group’s Organism

Have one group share what they drew for the stages in their model (question 2).
Have the other group share what they drew for their stages in their model (question 2).
List similarities between your two models: (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________
List differences between your two models: (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________
Did the __________________________ change size for every stage of its life? Yes No
If No: Two stages where the organism stays the same size are: stage ___ and stage ___.
Two stages in which a/an ____________________ changes size are stage ___ and stage ___ . (circle the stage that is bigger)
List if there is anything you would like to change or add to your model (question 2): (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________

Partner Group’s Organism

Circle One

Partner Group’s Organism

Part 3:
Life Cycle Video
What organism is in the video?________________________________
At the beginning of the video the organism was a __________________; this is known as ____________________________. Then the organism _________________________. Next the organism __________________, and these contained __________________ which would fall to the ground and __________________. This is known as ______________________. At the end the organism _____________ .
List similarities between the video and your model: (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________
List differences between the video and your model: (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________
In question 21 circle the key stages of life that the organism went through.

Draw and label the sunflower at 4 to 6 different stages in its life. Make sure to include the words: birth, growth, reproduction, death, and any other key words to designate stages of life.
List if there is anything you would like to change or add to your model (question 2): (you do not have to fill out all lines)
_________________________________________________
_________________________________________________
_________________________________________________

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4	5	6

Revising Your Model
What organism did you receive?________________________________
Highlight and read answers for questions 12, 19, and 26. Revise your model by drawing and labeling your organism at 4 to 6 different stages in its life. Make sure to include the words: birth, growth, reproduction, death, and any other key words to designate stages of life.
Assign a stage number(s) to each person in your group and write their name and the stage number(s) below.
_______________ stage number(s): _______
_______________ stage number(s): _______
_______________ stage number(s): _______
_______________ stage number(s): _______
Then share your model with the rest of the class.

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4	5	6

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Name

‘s

Name

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Name

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Name

Part 4:
Class Model
As a class, generate a model that could be used for any organism to show what happens during their life cycle.
Part 5:
Life Cycle Journal
Get your Life Cycle Journal from your teacher and fill it out for the next 8 weeks.

Part 6:
Data
Class Plant Graphs of Length and Height

Plant Length Summary:
*Fill out at the end of life cycle.
Max Length:_________
Min Length: _________

Over the organism’s life it had a length difference of:

Plant Height Summary:
*Fill out at the end of life cycle
Max Height:_________
Min Height: _________

Over the organism’s life it had a height difference of:

Class Animal Graphs of Length and Height

Animal Length Summary:
*Fill out at the end of life cycle
Max Length:_________
Min Length: _________

Over the organism’s life it had a length difference of:

Animal Height Summary:
*Fill out at the end of life cycle.
Max Height:_________
Min Height: _________

Over the organism’s life it had a height difference of:

Analyzing Data
Plant Life Cycle
Label the following on the fast plant height graph: birth, growth, flower, reproduce, and die.
The stage in which the organism was the longest was:
birth / growth / reproduction / death
The stage in which the organism was the shortest was:
birth / growth / reproduction / death
The stage in which the organism was the tallest was:
birth / growth / reproduction / death
The stage in which the organism was the shortest was: birth / growth / reproduction / death
Animal Life Cycles
Label the following on the silkworm length graph: birth, growth, form cocoon, moth, reproduce, and die.
The stage in which the organism was the longest was:
birth / growth / reproduction / death
The stage in which the organism was the shortest was:
birth/ growth / reproduction / death
The stage in which the organism was the tallest was:
birth / growth / reproduction / death
The stage in which the organism was the shortest was:
birth / growth / reproduction / death

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Lesson Reflection
What did you learn about the life cycles of plants and animals?
_______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________
Draw a picture of the life cycle of a plant or an animal of your choice and label key stages in life.

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