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Life Cycle of Plants
Big Idea
Plant structures and functions have evolved over time.
Essential Questions
Describe and compare the life cycles of nonvascular and seedless vascular plants.
Describe and compare the life cycles of seed plants (gymnosperms and angiosperms).
How do the life cycles of seed plants compare to non seed plants?  How does each life cycle effect the diversity of plants.
Standards


SCHS-S04-C04-02
Explain how genotypic and phenotypic variation can result in adaptations that influence an organism's success in an environment.
Science & Engineering Practices
Developing and Using Models
Modeling in 9–12 builds on K–8 experiences and progresses to using, synthesizing, and developing models to predict and show relationships among variables between systems and their components in the natural and designed worlds.
  • Develop and use a model based on evidence to illustrate the relationships between systems or between components of a system. (HS-LS1-2)
Content/Core Ideas
  • Non vascular and seedless vascular plants both have two stages of life and use spores for reproduction.  
  • How spores are released is different for each plant.
  • Gymnosperms reproduce with exposed seeds found within cones.  
  • Angiosperms reproduce with protected seeds found inside fruit.
  • Both reproduce using seeds.
  • Seed plants reproduce using seeds.  
  • Non seed plants use spores.  
  • Both go through a process called alternation of generations.
  • They each have a unique way of obtaining water and nutrients in order to continue the life cycle.  
  • Seed plants are better able to create diversity due to their life cycle.
Learning Practices
Design and use graphic organizers to show relationships between and within content topics (flowcharts, venn diagrams, cladograms, mind maps...).

Active Engagement Partner work:  Students work with partner(s) to solve basic problems, build models, think pair share...
Academic Vocabulary
spores
protonema
antheridia
archegonia
gametophyte
sporophyte
zygote
sporangium
fronds
gemmae
seed cone
ovules
pollen Cone
pollen grain
pollen Tube
embryo
seed coat
germination
pollination
seedling
style
stigma
anther
ovary
endosperm
fruit
No new vocab
Resources
Assessments
Here are SOME ways students can demonstrate knowledge and understanding of the essential questions.
  • Students will model the life cycles of nonvascular and seedless vascular plants using found materials or clay.  
  • Students will model the life cycles of gymnosperms and angiosperms using found materials or clay
  • Students will use previous models to show the similarities and differences between the four different life cycles.
  • Students will create a model using found objects or clay to show how different life cycles can lead to diversity in the plant world.