1, the rooting depth of a wheat is generally about 2 meters, and the deepest part can reach 4 meters. The roots of watermelon and pumpkin are 5 meters away from the main stem.

2. The number and shape of tree rings are closely related to time and sunshine. Tree rings are a cycle of change.

3. On the stem nodes of wheat or rice, we can see that the ratio of two adjacent nodes is 1: 1.6 18, which is another "golden ratio";

4. A rye has 6.5438+0.4 million small roots with a length of 623.27 kilometers.

5, plantain. The included angle between its blades is exactly 137.5, which accords with the numerical value called golden angle in mathematics.

Spatholobus suberectus is the longest plant in the world, which can reach 300-400 meters.