Animal Phyla and Organization

These flashcards cover the key concepts related to the 9 animal phyla, levels of organization, body symmetry, body cavity types, and embryological development.

What are the 9 Animal Phyla?

Sponges, Cnidarians, Arthropods, Roundworms, Flatworms, Annelids, Mollusks, Echinoderms, Chordates.

Define the characteristics of Sponges.

Sponges have specialized cells but lack true tissues and organs.

Give examples of Cnidarians.

Examples include jellyfish and corals.

What type of symmetry do most Chordates exhibit?

Bilateral symmetry.

What is a true coelom?

A true coelom is a fluid-filled body cavity completely surrounded by mesoderm.

What is the body cavity type of Roundworms?

Pseudocoelom.

Describe the embryological development of Arthropods.

Arthropods are protostomes.

What is segmentation and in which phyla is it present?

Segmentation is the division of the body into segments, present in Annelids and Arthropods.

What type of body cavity do Sponges have?

Acoelom.

What type of symmetry do Cnidarians exhibit?

Radial symmetry.