BIOLOGY 262, FALL 2000EXAMINATION #3 (PART 1) – IN-CLASSName Date MULTIPLE CHOICE.For the following multiple choice questions circle the letter in front of theresponse that best answers the question. (20%, 2% each)1. Which of the following phyla hasmembers that possess a schizocoelom?a. Cnidariab. Echinodermatac. Platyhelminthesd. Rotiferae. None of the above (all lack them)2. Which of the following is secretes themolluskan shell?a. foot.b. gill.c. mantle.d. radula.e. None of the above3. Which of the following have radialsymmetry as adults?a. earthwormsb. flatwormsc. roundwormsd. spongese. None of the above (all are not radial)4. Which of the following is the correctorder of vertebrate development?a.zygoteà blastula à morula à gastrulab. zygoteà gastrula à morula à blastulac. zygoteà gastrula à blastula à morulad. zygoteà morula à blastula à gastrulae. None of the above (all are incorrect)5. Which of the following is FALSE aboutGuinea worm?a. Adult worms leave their human hoststhrough the skin to reproduce.b. Adult worms often block the valvesof the heart.c. Classified in the Phylum Nematoda.d. Larvae are consumed when infectedwater fleas are mistakenly drunk inunstrained water.e. None of the above (all are TRUE)6. Which of the following is the acellularmatrix of vertebrate bone tissue?a. calcium carbonateb. chondroitin sulfatec. chondrocytesd. osteocytese. None of the above7. Which of the following is FALSE aboutearthworms?a. They are hermaphroditic.b. They are members of the PhylumNematoda.c. They eat soil as they dig.d. They lay their eggs in cocoons.e. None of the above (All are true)8. Which of the following is FALSE abouttapeworms?a. They lack a digestive tract.b. They live in a vertebrate’s intestineas adults.c. Their body is divided intoproglottids.d. They lack a mouth.e. None of the above (all are true)9. Which of the following has pedipalps?a. barnacleb. grasshopperc. rollie pollie (AKA. pill bug, woodlouse)d. scorpione. None of the above (All lack chelicerae)10. Which of the following is most closelyrelated to a lungfish?a. bassb. humanc. lampreyd. sharke. troutMATCHING.For the following exercise match the taxonomic groups or taxonomic terms in theright column with the corresponding organisms in the left column. Each letter may be used morethan once or not at all. (5%, 1% each)1. adipose/fat 2. blood 3. cartilage 4. epidermis 5. tendon A. connective tissueB. epithelial tissueC. muscle tissueD. nervous tissueFILL-IN-THE-BLANK.For the following exercises write the appropriate word or words in theavailable space. (25%)1. Fill in the appropriate labels below thefollowing drawing. (4%) Phylum Body Form/ Stage 2. Fill in the appendages below. (6%) Spider Crayfish Seg. 1 Seg. 2 Seg. 3 3. The class that includes the ray-finnedfishes is . (2%)4. Sketch a diagram of a section through asimple columnar epithelium below andindicate where in a human you mightfind such an epithelium. (3%)5. Label a synapomorphy for each of theindicated branches below. (4%) Fungi Porifera Other Animals B A a. b. 6. Label a synapomorphies for each of theindicated branches below. (6%) Porifera Cnidaria Other Animals AC B a. b. c.BIOLOGY 262, FALL 2000EXAMINATION #3 (PART 2)Name Date DEFINITIONS.For the following words or phrases define them as accurately and concisely aspossible. (20%, 4% each)1. Basement Membrane:2. Gastrulation:3. Holoblastic Cleavage:4. Notochord:5. Sessile:SHORT ANSWER. For the following answers, address each question in as concise and lucid amanner as possible. Do NOT exceed the space provided. (10%)1. Explain how the dorsal nerve tube of a vertebrate forms. What does the dorsal nerve tubebecome in an adult vertebrate? (Feel free to use drawings to supplement your answer.) (5%)2. How and from what did vertebrate and arthropod jaws evolve? How does the structure of jawsin these two groups illustrate that jaws in these two groups evolved from different structures.(5%)SHORT ESSAYS.For the following essays, address each question in as concise and lucid amanner as possible. Do NOT exceed the space provided. (20%)1 . Explain the process of fertilization. Be certain to identify all appropriate structures andreactions. (Feel free to use drawings to supplement your answer.) (10%)2. Compare and contrast the flatworms and the roundworms. In which phylum are eachclassified? What basic anatomical similarities and differences are there? (Feel free to use atable for your answer.)
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