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- Hello, Mr. Einstein! Mr. Einstein, I have a question, how do plants eat? They don't grab silverware and poke food invisibly, right?
- Hmm...
- Ok, Mr. Einstein!
- Of course not! That is scientifically impossible! Sit down and I'll tell you.
- So basically photosynthesis means using light to put things together!
- Plants do a process to nourish themselves called PHOTOSYNTHESIS. Photosynthesis is composed of the Greek words photo and synthesis. Photo means light, and synthesis means putting things together,
- Excelsior! Photosynthesis requires 4 substances: water, CO₂, sunglight, and chlorophyll, the tiny substance found in chloroplasts at the leaves. Without even one of them, photosynthesis will not work. You need all 4 of them. Here is an example with our class plant over here. Here at class, we water it, so the water absorbs it and sends it to the other plarts of the plant. Then, their tiny pores called stomata that get CO₂.
- CO₂
- CO₂
- CO₂
- Now based on our diagram, you can see the plant absorbs sunlight. But how? At the leaves, there are chloroplasts that contain the tiny chlorophyll. They trap the sunlight. So, once they have everything, they get the CO₂ and water, and in the presence of sunlight, make glucose and oxygen! Oxygen is the gas they breathe out, which is what we breathe. (CO₂ is what we breathe out instead.) The glucose becomes the food they eat to nourish themselves, and they breathe out the oxygen. If they have too much glucose, they will store it as excess sugar, called starch.
- CO₂ + H₂O = O₂
- CO₂ + H₂O = O₂
- CO₂ + H₂O = Glucose
- CO₂ + H₂O = Glucose
- Thank you, Mr. Einstein! My name is Mark. I gotta go to my SS class, bye!
- Ok, and that's it for photosynthesis, kid! So what's your name? You are not from any of my classes.
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