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Which of the following statements is TRUE concerning sponges?

The image below represents the life cycle of ____.  obelialife cycle.png

What is the name of the principle that states that the simplest cladogram with the least number of stages is more likely to be accurate or the most defendable?

Look at the image below. What is the appropriate term to describe the orientation shown in #2? starfishoralaboral.png

The arrangement of body parts around a central axis or point is called ___. 

Which of the following describes the nervous system of a flatworm?

Look at the image below. Which of the following statements below are TRUE? budding.png

What does “eukaryotic” represent?

What does “heterotrophic”  represent?

An organism’s contribution to the next generation’s gene pool is the definition for