The secret of morning glory

The secret of morning glory

A few days ago, when I watered the pot, I found a few insignificant morning glory in the pot. I didn't pay much attention to it at first, and gradually I found it very special, so I observed it.

I found that morning glory was blue in the morning, but turned red at noon. For this reason, I feel very strange, and I can't understand it. So, I turned out "100,000 Why" and found the answer. It turns out that the flowers contain a lot of anthocyanins. Because anthocyanins are very sensitive to carbon dioxide, there is less carbon dioxide in the air in the morning. At this time, the flowers are blue. At noon, with the increase of carbon dioxide in the air, the morning glory itself The amount of carbon dioxide absorbed also increased, when the anthocyanins gradually changed from blue to red, and the flowers became red.

Instructor Jiang Qiurong

Sixth grade: wzyuzhuang