What do lancelets an - Study guides, Class notes & Summaries

1) What are the cells in a sponge that are primarily responsible for trapping food particles from circulating water? A) amoebocytes B) choanocytes C) mesohyl cells D) pore cells (porocytes) E) epidermal cells Answer: B 9) A radially symmetrical animal that has two embryonic tissue layers belongs to which phylum? A) Porifera B) Cnidaria C) Platyhelminthes D) Nematoda E) Echinodermata Answer: B 10) All of the following are characteristics of the phylum Cnidaria except A) a gastrovascular cavity. B...

Detailed Contents UNIT 1 Science, Chemistry, and Cells Chapter 1 The Scientific Study of Life 1.1 What Is Life? A. Life Is Organized B. Life Requires Energy C. Life Maintains Internal Constancy D. Life Reproduces, Grows, and Develops E. Life Evolves 1.2 The Tree of Life Includes Three Main Branches 1.3 Scientists Study the Natural World A. The Scientific Method Has Multiple Interrelated Parts B. An Experimental Design Is a Careful Plan C. Theories Are Comprehensive Explanations D. ...