Final answer:
Angiosperms are referred to as "flowering plants" because their seeds are enclosed in ovaries of flowers.
Step-by-step explanation:
The type of higher plant referred to as "flowering plants" is the angiosperms. Angiosperms are characterized by having seeds enclosed in ovaries of flowers. They include a wide range of plants such as grasses, herbs, shrubs, deciduous trees, vegetables, and plants known for their beautiful flowers.