1. Title: Who’s the odd man out? Category: Biology Subcategory: Difficulty: Unknown Year 2004 Bowl: Shore Bowl Author: C. Grant Law Contact info: 732-932-6555 ext 310 Email law@marine.rutgers.edulaw@marine.rutgers.edu IMCS, Rutgers University 71 Dudley Rd. New Brunswick, NJ 08901

2. QUESTION Round:Time: 2 minutesStandard/Category: Biology QUESTION: One of these animals doesn’t belong in the group... 1)Which is it? (5 points) 2) How many consistent differences between those that belong and the one that doesn’t can you think of? You will receive 1 point for each correct answer. You can submit as many answers as you wish, but you may only score a maximum of 15 points. (15 points)

3. ANSWER Round:Time: 2 minutesStandard/Category: Biology QUESTION/ANSWERS: 1)Which is it? (5 points) ANSWER: Animal “A” 2)How many consistent differences between those that belong and the one that doesn’t can you think of? You will receive 1 point for each correct answer. You can submit as many answers as you wish, but you can only score a maximum of 15 points. (15 points) ANSWER: There are more correct answers to this question than I can list here, but we are looking for taxonomically significant differences. Some examples: A is a cnidarian, the others are molluscs; A has a sac-like gut, the others have complete guts; A has no true mesoderm, the others do; A is radially symmetrical, the others are bilaterally symmetrical; A develops nematocysts, the others do not (careful here, some nudibranchs store nematocysts acquired from their cnidarian prey, but they can not grow them on their own); sessile vs. mobile; planula vs. trochophore larvae; aceolomate vs. ceolomate; etc... SSverdrup, KA et al. 2003. An Introduction to the World’s Oceans. McGraw-Hill (Figure 17.21)