Answer:
The phylum <u>Chordata </u>contains most common animals you are familiar with such as eagles, dogs, foxes, and frogs.
While the earth is home to many members of this phylum, earthworms are not a member of <u>Chordata</u>.
The most successful phylum on earth is <u>Arthropoda</u>, which contains insects, spiders, and crustaceans.
An animal that molts it exoskeleton is called an <u>Arthropod</u>.
<u>Stem cells</u> are cells that have the potential to become any type of cell; they have not yet received their genetic programming.
All members of the animal kingdom are multicellular, heterotrophic and <u>eukaryotic</u>.
A starfish is a bilaterian deuterostome with <u>radially</u> symmetrical adults.
Complete the chart by describing what kinds of organs or tissues each type of germ layer becomes:
<u>The endoderm </u>will become the digestive tract (or gut), as well as a number of associated organs and glands. It will give rise to the lungs, liver, and pancreas, as well as the thymus, thyroid, and parathyroid glands.
<u>The mesoderm </u>forms skeletal muscle, bone, connective tissue, the heart, and the urogenital system. Due to the evolution of the mesoderm, triploblastic animals develop visceral organs such as stomachs and intestines, rather than retaining the open digestive cavity characteristic of diploblastic animals.
<u>The ectoderm</u> eventually forms certain “outer linings” of the body, including the epidermis (outermost skin layer) and hair. The ectoderm also is the precursor to mammary glands and the central and peripheral nervous systems.