In general, less complex animals are:
a. more likely to rely on specialized mouth parts for digestion.
b. more likely to perform extracellular digestion than intracellular digestion.
c. more likely to have a gastrovascular cavity than to have a digestive tract.
d. more likely to have two body openings than to have one body opening.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.