There are over 1.5 million species of animals and over 0.5 million species of known plant of dissimilar form.To deal with such a large number a system or classification is required.The most previous system of classification was two kingdom system comprising plant and animal kingdom. The other system is five kingdom system including kingdom protista,monera,plantae,fungi and animalia.classification
Because their is so many animals and plants on this earth
My 7th grade science class is learning about this and I was wondering what are some of the problems that biologists have while classifying? Some one please answer, thanks.