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Thursday, April 9, 2026

Plant evolution lab activity: Study questions for Alternation of Generation

 1.  What is the definition of a plant?

2.  Write the equation for photosynthesis
3.  Glucose can be used for three purposes for plants.  What are these three purposes?
4.  Review how sexual reproduction occurs in multicellular animals and explain the meaning of the words "haploid" and "diploid"

5.  The earliest plants in evolutionary history were bryophytes.  What are bryophyte characteristics?
6.  Explain Alternation of Generation
7.  What characteristics of tracheophytes help them survive on land?
8.  What is the order of evolutionary history:   fern, flower, moss, cedar tree...what is the correct order?

 First go into the school garden and bring back some mosses and fern specimens.  You will start this Plant evolution lab activity .  

1.  Examine MOSSES and FERNS by using the DISSECTING MICROSCOPES located in the back room.   These have TWO OCULAR LENSES: two eye pieces, not one.   

2.  Draw your specimens while observing under low power. Put your specimens on paper towel.   if a petri dish is available, try submerging your moss under water. It looks very much like seaweed. Why does it resemble algae?  

As you work through this lab, note that we do not have certain specimens. We have no liverworts or horsetails in our school garden so you cannot examine them.  Just answer the questions for liverworts and horsetails.  

Plants alternate their generations.  If humans did this, it would be something like this: I will explain this when I come back to school.























Watch this video and learn about alternation of generation