UNIT COVER PAGE
Plant Science
Bremen Dist. 228
School District:
Science
Department:
Unit Title: Plant Propagation
Course:
Plant Science
10-12
Grade Levels:
Topic Areas: Asexual & Sexual
Time Frame:
5 weeks
Unit Designer(s):
Date Created:
3/22/05
Date Modified:
Karen Kalmanek, Craig Cappel, Marie Carr, Amy Bertrand
Link to State Standards
12.A.4b
12.11.15
Describe the structures and organization of cells and tissues that underlie basic life
functions including nutrition, respiration, cellular transport, biosynthesis and
reproduction.
Understand that meiosis is an early step in sexual reproduction in which the pairs
of chromosomes separate and segregate randomly during cell division to produce
gametes containing one chromosome of each pair. Understand that only certain
cells in a multicellular organism undergo meiosis.
Link to Department Learner Program Outcomes (LPO)
5.10.2.52
5.10.2.58
5.12.2.2
5.10.1.1
TLW know major structure and functions of mitosis and meiosis.
TLW explain different propagation and plant growth factors
TLW demonstrate proper lab safety while performing laboratory investigations.
TLW understand the terminology of science.
Summary of Unit
Plants are able to reproduce using either sexual (seeds) or asexual (vegetative parts) means.
Students will explore and practice these methods.
Resources
Key Words
Asexual/sexual reproduction
Budding
Germination
Dormancy
DNA
Plant parts
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Haploid/diploid
Fertilization
Genetics
Division
Mitosis/meiosis
Flower parts
1
STAGE 1: IDENTIFY DESIRED RESULTS
Enduring Understandings
Students will understand that
plants reproduce in multiple ways
the formation of seeds involved the process of meiosis
there are optimum conditions for germination of a plant’s seeds
structures, other than seeds, can be used to produce plants
there are underlying genetic mechanisms that are involved in propagation
people can improve a plant’s vigor through asexual propagation
Essential Questions
1.
2.
3.
4.
5.
6.
What’s the difference between sexual and asexual propagation?
What do seeds need to germinate?
How is a seed produced?
How does a plant propagate without seeds?
How can a plant be improved through genetics?
What are the economic benefits of producing plants asexually?
Knowledge and Skills
Students will know
parts of a flower
mitosis and meiosis
pollination
fertilization
germination
DNA
methods of asexual propagation
dormancy
genetics—to improve plants (hybridization
& mutations)
applications of propagation
Students will be able to
label stages of mitosis & meiosis
identify parts of the plant
describe entire process of sexual propagation from pollination to germination
describe difference between plant root, stems, and leaf cuttings
demonstrate propagation techniques
explain how genetics has an impact on plant growth
Students will be familiar with
planting times
grafting techniques
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2
STAGE 2: DETERMINE ACCEPTABLE EVIDENCE
What evidence will show that students understand?
Required Assessments (brief description)
Propagate plants asexually
Determine seed viability (sexual propagation)
Other Assessments (brief description)
Observing the growth of mutant corn
Protein synthesis exercises
Propagate plants from seed
Tissue cultures
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PLAN LEARNING EXPERIENCES AND INSTRUCTION
What sequence of teaching and learning experiences will equip students
to develop and demonstrate the desired understandings?
Learning Activities
W
How will you ensure that all students know where they are headed in the unit, why they are
headed there, and how they will be evaluated?
State objectives and produce a timeline of events.
H
How will you hook students at the beginning of the unit?
Introduce the 6 houseplants for performance task (Ivy, Spider Plant, Philodendron, African
Violet, Pothos (Devil’s Ivy), and Coleus)
E
What events will help students experience and explore the big idea and questions in the unit?
How will you equip them with needed skills and knowledge?
Mutant Corn Lab
Turgor Minilab
Research Project
Notes
R
How will you cause students to reflect and rethink? How will you guide them in rehearsing,
revising, and refining their work?
Performance task for sexual propagation
E
How will you help students to exhibit and self-evaluate their growing skills, knowledge, and
understanding throughout the unit?
Performance task for asexual propagation
T
How will you tailor and otherwise personalize the learning plan to optimize the engagement and
effectiveness of ALL students, without compromising the goals of the unit?
Pair of lab activities
Group for sexual propagation performance task
O
How will you organize and sequence the learning activities to optimize the engagement and
achievement of ALL students?
Review plant parts – basic growth areas – DNA – genetics – sexual propagation – asexual
propagation
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Essential Questions at Topic Level
Use the six facets of understanding to generate possible essential questions for the topic of
your three-circle audit (curricular priorities).
Explanation
How does a
plant propagate
without seeds?
Interpretation
What are the
economic
benefits of
producing plants
asexually?
Application
How can a plant be improved
through genetics?
(Topic Area)
Plant
Propagation
Empathy
Perspective
How is a seed
produced?
Self-Knowledge
What do seeds need to
germinate?
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What’s the
difference
between sexual
and asexual
propagation?
5
Student Performance Task
Unit: Plant Propagation - Sexual
Task: Self Knowledge
Course: Plant Science
Time Frame: 1 week +
(depends upon seeds)
Overarching Understanding:
 Students will understand that the process of investigation enhances and assists in
understanding the techniques of science, the use of scientific models, and the analyzing
and reporting of conclusions based on data.
Enduring Understanding:
 Students will understand that there are optimum conditions for germination of a
plant’s seeds.
Essential Question:

What do seeds need to germinate?
Vignette:
You are a propagation technician for Burpee’s Seed Company. You have been
assigned the task to write the advertisement/description for a given plant for the new
catalog. It is your job to research the conditions needed for germination of this plant’s
seeds and test the seed’s viability. Develop a spreadsheet/data table for viability results
and prepare the advertisement for the consumers.
Standard:
You will be graded on the following scale:
 Advertisement & picture (include light, temperature and water conditions) =
20 pts
 Data table – completeness & accuracy = 10 pts
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Performance Task Blueprint
Unit:
Plant Propagation
Topic Area:
Sexual Propagation
Goal
To identify the optimal conditions of seed germination to determine
seed viability.
Role
You are a propagation technician for Burpee’s Seed Company
Audience
Consumers
Situation
You’ve been assigned the task to write the advertisement/description for
a given plant for the new catalog. It’s your job to research the
conditions needed for germination and test the seed’s viability.
Product or
Performance
Advertisement for seed
Spreadsheet/Data Table for viability results
Standards
Advertisement & picture (light, temp, water) 20 pts.
Data Table – completeness & accuracy 10 pts.
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Type: Self Knowledge
Time Frame: 1 week+ (depends on seeds)
7
Student Performance Task
Unit: Plant Propagation - Asexual
Task: Explanation
Course: Plant Science
Time Frame: 1 period +
extra time as needed
Overarching Understanding:
 Students will understand that the process of investigation enhances and assists in
understanding the techniques of science, the use of scientific models, and the analyzing
and recording of conclusions based on data.
Enduring Understanding:
 Students will understand that structures, other than seeds, can be used to produce
plants.
Essential Question:

How does a plant reproduce without seeds?
Vignette:
You are a greenhouse technician. Your boss has sent you to a workshop to learn the
various types of asexual propagation techniques. It is your job to determine the best
method to use with a specific group of houseplants in order to produce the highest yield.
Demonstrate the various asexual propagation techniques of houseplants by producing a
mini-greenhouse. You will test six different houseplants and produce a data table
illustrating your results. Report these findings to the greenhouse owner.
Standard:
You will be graded on the following scale:
 Mini-greenhouse = 30 pts
 Data table (name of plants, time of propagation, type of propagation
technique, time to root, explanation of success/failure) = 30 pts
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Performance Task Blueprint
Unit:
Plant Propagation
Topic Area:
Asexual Propagation
Goal
To demonstrate various asexual propagation techniques of houseplants
Role
Greenhouse technician
Audience
Greenhouse owner
Situation
Product or
Performance
Standards
Type: Explanation
Time Frame: 1 period + extra time
Your boss has sent you to a workshop to learn the various types of
asexual propagation. It’s your job to determine the best method to use
with a specific group of houseplants in order to produce the highest
yield.
Produce a mini-greenhouse showing your techniques of a least 6
houseplants
Data Table (name of plant, time of prop., type of prop., time to root,
explanation of success or failure)
Greenhouse (30 pts)
Table (30 pts)
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Creating Possible Performances
Performance
verb
Performance
Generalization
Possible performances for
Plant Propagation
(topic/unit)
Facet One: Explanation
1.
Demonstrate asexual propagation techniques
by
Facet Two: Interpretation
2.
Document the economic benefits of producing
plants asexually
by
Facet Three: Application
3.
Propose a way to improve a plant feature
through genetics
by
Facet Four: Perspective
4.
Compare and contrast types of propagation
by
Facet Five: Empathy
5.
Consider the production of seed from meiosis
through fertilization
by
Facet Six: Self-Knowledge
6.
Be aware of all factors necessary for
germination
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by
10