BISC120 Midterm 3 Answer Key - Copy

BISC120 Midterm 3 Answer Key - Copy - Fall 2008 BISC 120Lg...

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Fall 2008 BISC 120Lg Midterm 3 ANSWER KEY Instructor: Dr. Andrew Gracey PLEASE READ ALL THE INSTRUCTIONS CAREFULLY. 1. DO NOT start until instructed. 2. Write your name on all the pages. 3. Make sure you have a total of 9 pages. 4. Read all the questions carefully. 5. Note that questions have different point values. In all, 100 points are possible. 6. Answers written outside of the box will NOT be graded. 7. Answers written in pencil CANNOT be submitted for a re-grade. 8. You have 50 minutes for this exam. Page # Score Please check the box next to your TA’s name : Lin Ding Youngkyoung Kim Yao (Helena) Ding Jessica Ledesma Nicholas Foster Chanpreet Singh Glenn Fox Mona Sobhani Nathan Garcia Jagruti Vedamati Kathleen Garrison Yerina Ji Yu-Tien Hsu Yue (Alan) Zhang Fan (Lawrence) Yang 1 __0__ /0 pts 2 _____/10 pts 3 _____/12 pts 4 _____/10 pts 5 _____/18 pts 6 _____/18 pts 7 _____/12 pts 8,9 _____/20 pts Total _____/100 pts 1
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Section 1. Multiple choice (1.5 pts each). Select the most appropriate answer and write in CAPITAL LETTERS ONLY in the accompanying box. 1. Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition A) from organic matter. B) by preying on animals. C) by ingesting it. D) by consuming living, rather than dead, prey. E) by using enzymes to digest their food. 2. What do animals as diverse as corals and monkeys have in common? A) body cavity between body wall and digestive system B) number of embryonic tissue layers C) type of body symmetry D) presence of Hox genes E) degree of cephalization 3. The Hox genes came to regulate each of the following in what sequence, from earliest to most recent? 1. identity and position of paired appendages in protostome embryos 2. formation of water channels in sponges 3. anterior-posterior orientation of segments in protostome embryos 4. positioning of tentacles in cnidarians 5. anterior-posterior orientation in vertebrate embryos A) 4 → 1 → 3 → 2 → 5 B) 4 → 2 → 3 → 1 → 5 C) 4 → 2 → 5 → 3 → 1 D) 2 → 4 → 5 → 3 → 1 E) 2 → 4 → 3 → 1 → 5 4. What is the probable sequence in which the following clades of animals originated, from earliest to most recent? 1. tetrapods 2. vertebrates 3. deuterostomes 4. amniotes 5. bilaterians A) 5 → 3 → 2 → 4 → 1 B) 5 → 3 → 2 → 1 → 4 C) 5 → 3 → 4 → 2 → 1 D) 3 → 5 → 4 → 2 → 1 E) 3 → 5 → 2 → 1 → 4 5. You have before you a living organism, which you examine carefully. Which of the following should convince you that the organism is acoelomate? A) It responds to food by moving toward it.
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BISC120 Midterm 3 Answer Key - Copy - Fall 2008 BISC 120Lg...

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