Stuff You Missed In Botany: Cambium Growth

Stuff You Missed In Botany: Cambium Growth

Did you ever wonder how a plant can turn itself towards a light source (the  sun, or a grow light)?

It’s called Cambium Growth. There is a tissue paper membrane called Cambia that form identical rows of parallel undifferentiated cells for plant growth. The side of the plant that is away from the light source grows longer, stretches out, this is how it reaches for the light.

If you turn your plant, you’ll notice that the next day, it will again be reaching. The cambia will grow longer cells on the side away from the light. If you remember from photosynthesis, the plant needs the light to complete the chemical transformation of light to food for the plant. It makes sense that there would be a mechanism to ensure the light source can be utilized most effectively. Our God is an awesome God!

Cambia is also the layer that makes the rings of a tree each year. They are dormant in the winter and grow long during the summer. Let’s see a cross section. This will help the visuals out there.

Cross Section of Cambia

Here it is again from another angle. Just for you = )

Another way to see it, Cambia

So, next time you see your plants performing their little plant acrobatics, reaching for the sun, you’ll know, “Hey, that’s the cambia!”

Have a paisley cambia day~KeriAnne

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