Question

As animals have progressed from sponges through mammals, describe in detail 2 ways animals have become more complex?

Answer 1

Answer:

1: Developed Digits

2: Developed senses

Explanation:

Answer 2

Sponges, ctenophores, placozoans, and cnidarians have key evolutionary significance in that they bracket the time interval during which organized animal tissues were first assembled, fundamental cell types originated (e.g., neurons and myocytes), and developmental patterning mechanisms evolved.