Apologia Botany - Lessons 7 & 8 - Roots & Stems

Saturday, March 28, 2015

We are moving along in our study through Apologia Botany. We skipped lesson 6 which covers leaves to give time for spring to happen around here. Bud just started opening, and the grass is getting green. I'm so thankful for signs of life after a long winter! These last few weeks we covered Roots & Stems.

This lesson we learned about the water pipes of a plants: The root system. It's so fun for me as an adult to cover these lessons. As we eat our fruits and vegetables lately we are far more curious about them because we know more about how they are made up. That has been so fun! One of our activities was to see how roots soak up water and nutrients.

Fortunately I had some carrots on their last leg in the fridge! We cut off the tips.

We added water and food coloring to a bottle.

Then we soaked one of the carrots in the blue water for a few days. We left the other carrot in the refrigerator.

After a few days we cut both carrots in half to see what happened.

The carrot soaked in the blue water carried that water up through the root tip. The other one started shriveling up without a source of water.

Here is one of his root notebooking pages. He wrote down all the things we learned about roots.

We moved on to lesson 8 about stems. We learned about auxins in the plant that cause phototropisim or how a plant knows to turn towards the sun. We made a stem out of clay.

Next we pinched the side of the clay that was on the dark sight (or facing away from the light.)

The part facing towards the light then bends toward it.

Oh celery experiment. How many times must I be asked to do you before I s.t.o.p.? Ha! We did it anyway (again) to show how xylem carry water up to the leaves of the stem.

The next activity we did would demonstrate how important light is to plant growth and health. Silas colored one cup completely black and left the other white.

We soaked our peat pellets in water. These are the times I am so glad I got the science kit!

Silas poked a small hole in the dark cup. This is the only light this sad little plant would receive.

Our peat pellets were ready for us to plant now!

Silas added one to each cup.

 
He then planted one bean seed per cup.

We covered the black cup up and left the other to have all the light it could find.

This is the result. I'm pretty sure this will preach. How tall and healthy can we grow without light? The answer is not so much. The poor little light-less bean still hasn't grown a healthy leaf. We're still wondering if it will eventually overcome its sad beginning.

Silas filled out the things we learned in his notebook. Next lesson we will cover trees! It's such a perfect time to see all the new growth happening. I'll see you then!

1 comment:

  1. So enjoy living this again through your eyes. Love what you all are learning. :)

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