The characteristics used to classify plants are different from animals. It is because the basic designs of animals are very different from plants.
Criteria for deciding divisions in plants are:
€¢ Differentiated/ Undifferentiated plant body
€¢ Presence/ absence of vascular tissues
€¢ With/without seeds
€¢ Naked seeds/ seeds inside fruits
But the animals can’t be divided into groups on these criteria. In the animal kingdom, anatomical characters are taken into consideration while deciding about subgroups. They are divided on the basis of their body structure.