An animal with the following body wall organization will not have:

1. Cephalization

2. Three germ layers

3. Bilateral symmetry

4. A complete digestive tract

Which of the following Phyla are included in Enterozoa?

(1) Annelida, Mollusca, Porifera

(2) Echinodermata, Hemichordata, Porifera

(3) Mollusca, Arthropoda, Hemichordata

(4) Porifera, Mollusca, Arthropoda

Identify the following diagrams and these represent:

1. (a) radial symmetry, (b) bilateral symmetry

2. (a) bilateral symmetry, (b) radial symmetry

3. (a) asymmetrical, (b) radial symmetry

4. (a) bilateral symmetry, (b) asymmetrical