在著名的动画影片《冰河世纪》里面,我们能看到各种史前动物,同时也能看到很多现代植物。没办法,植物类群通常要比动物古老得多。不过,动物对植物的依赖是一成不变的,因为冰期的来临,食物大量减少,动物们都到了食不果腹的地步。有一个情节,让人印象非常深刻:两头犀牛在讨论谁吃下一朵好看的花,就在它们谦让的时候,了这朵花。不过,仔细看这朵花跟我们平常见的菊花有些不一样,因为那是一朵非洲菊! In the famous animated film “Ice Age”, we can see various prehistoric animals and at the same time see many modern plants. No way, plant groups are usually much older than animals. However, the animal’s dependence on the plant is immutable, because the advent of the ice age, the food is greatly reduced, the animals have to go to the point where food is not enough. There is a plot that is very impressive: two rhinoceros are discussing who has eaten a nice flower, and when they are modest, this flower. However, looking closely at this flower is not the same as our usual chrysanthemum because it is a gerbera!