1 What are the differences between the food substances required by plants and humans?
2 What are the fundamental differences between the nutrition (process) of plants and that of humans?
3 Is it possible for plants to exist in the deep sea? Why or why not?
4 Are there any organisms in the deep sea? If so, what are their food sources?
5 Are there any autotrophic organisms in the deep sea? If so, where are they most likely to be found?
6 In the process of photosynthesis, what are the roles of light and chlorophyll?
7 If there were no plants in the world, could other heterotrophic organisms exist?
8 Photosynthesis is described as the most important chemical reaction on Earth. Explain why.
9 Why do the minerals required by plants exist in ionic form?
10 Why is Changbai Mountain renowned for producing high-quality ginseng?
11 If nitrogen, phosphorus, potassium, and magnesium are deficient, what common symptoms appear on plant leaves?
12 If nitrogen, phosphorus, potassium, and magnesium are deficient, what distinct symptoms do plants display for each deficiency?