New Plants From Stem Cuttings Experiment and Hypothesis

Today we reviewed our hypothesis to see it was true or false.  

Our focus questions:
How has your stem cuttings changed?  Do your observations support your hypothesis?  Why or why not?

My hypothesis is that a stem will not grow in water because the roots are broken.  The roots bring water to the plant and keep it balance so it will not tip over and die.

After observing the stem I learned that my hypothesis was false because one of the plants had grown roots.

After my experiment I learned that a stem can grow back roots in water.

Another student hypothesis was that a stem will grow in water because when you touch the plant it feels like water is inside of it.  Inside the plant is something green that takes in the water.

After observing the stem, I learned that my hypothesis was true.  I saw that it grew roots in water.

I learned that plants need the following things to survive:  sunlight air, nutrients, space, and water.

I also learned that the idea that all plants needed soil to survive is not true.  The experiment proved that plants can grow in water only.

Another student said, "after my experiment I learned that leaves capture the sunlight so it can make food and nutrients for the plant through photosynthesis."

Focus on Science Standards 
Students know both plants and animals need water, animals need food, and plants need light.



Students know roots are associated with the intake of water and soil nutrients and green leaves are associated with making food from sunlight.



Draw pictures that portray some features of the thing being described.



Record observations and data with pictures, numbers, or written statements.