Today in science we tested a bean seed and a potato for starch to answer the question, “Do plants contain the food that organisms need?” Below, is my scientific explanation that explains what we learned and discovered from our lab today.

Image of lab:

Claim:
Plants contain the food that organisms need.

Evidence:
When we looked at what people ate for dinner last night, we could trace the food back to a plant. We also tested a seed in iodine and there was some starch in it which means there’s food in it. The way we knew there was starch in it because when we put the iodine in/on it it turned black/darker.

Reasoning:

We know there’s food in plants because when the seed turned black, that’s saying there’s starch in it. For something to be food it has to have either starch, fat, sugar, and/or protein and the seed has starch.