The species diversity of plants is much less than of animals What could be the reason that animals achieved greater diversification?

Explanation

Plants are fixed. They required fewer evolutionary adaptations to get optimum amount of raw material and sunlight and mechanism to ward off the effect of herbivory. So they have lesser diversity. Animals are mobile, A number of them will converge on a single piece of vegetation. they must avoid competition by developoing niche specialisation. A single piece of vegetation will be, therefore, allowing evolution of several hundred animal species similarly a herbivore species may provide food to several types of carnivore species. this results in higher diversity among animals.