In medusae, mesoglea comprises the bulk of the animal and forms a resilient skeleton. In polyps, the water-filled coelenteron acts as a hydrostatic skeleton, which, in concert with the mesoglea, maintains the form of these animals. Muscles in cnidarians are extensions of the bases of ectodermal and endodermal cells.
As my memory serves me well, there should be an options to choose. Anyway I remember that organization. So the right answer is: New regulations for how Australia, New Zealand and other countries in Oceania manage economic growth and protecting natural resources was part of creating <span>South Pacific Forum </span>
Answer:
Angiosperms are the most advanced and beneficial group of plants. They can grow in various habitats as trees, herbs, shrubs, and bushes. The angiosperms originated about 250 million years ago and comprise 80% of the earth. They are a major source of food for humans and animals.
Explanation:
<span>They do not possess any skeleton at al</span>
