Quiz on Cnidarians and other invertebrates.Cnidarians are a phylum of organisms with mostly an aquatic habitat. They have cells that are specialized for capturing prey referred to as cnidocytes. A common example of a Cnidarian is the bell - shaped jelly fish found in oceans and seas. Their bodies are slimy, reason why we have the jelly fish as an example. Most cnidarians feed on plankton and other small organisms equal in size or larger than them. Cnidarians have many characteristics which will be seen in this quiz. There also general knowledge questions about other invertebrates.| Multiple choice quiz featuring biology test questions for students to review biology topics. Click on each question and select the correct answer below and submit. Feedback is instant and at the end you will get your score. Biology quiz for 2nd, 3rd, 4th, 5th, 6th, 7th grades to review. Focus: Online science Trivia | science quiz questions | Biology Test | Biology questions.