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Examen
Wsu Biology 106 Exam 3 Questions And Correct Detailed Answers With Rationales |Already Graded A+
WSU Biology 106 Exam 3 
QUESTIONS AND CORRECT 
DETAILED ANSWERS WITH 
RATIONALES |ALREADY GRADED A+ 
Arthropods - ANSWER- Phyla with greatest amount of diversity with 85% of animal spp 
700 million years ago - ANSWER- When the first animals originated 
Porifera (sponges) - ANSWER- Phyla with no tissues, muscles, nerves, or specialized 
organs 
Choanocytes - ANSWER- Flow of water and food acquisition in sponges 
Amoebocytes - ANSWER- Found in sponges, these cells are mobile and perform 
numerous ...