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Exam (elaborations)

Bio 322 Exam 3 Questions And Answers

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  • Course
  • BIO 322
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  • BIO 322

Hirudin is similar to _______ ~ heparin (used medically) Hirudo medicinalis ~ medicinal leech True or False: All leeches are brown in color. ~ False. Some are brightly colored. bladder worm ~ larval stage of class cestoda (tapeworm) mesenchyme ~ connective tissue of acoelomates (...

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  • August 7, 2024
  • 39
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIO 322
  • BIO 322
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Bio 322 Exam 3 Questions
And Answers

Levels of Animal Organization


✓~ kingdom, phylum, class, order, family, genus, species




Taxonomy


✓~ science of classification




Systematics


✓~ study of the diversity of life and the evolutionary relationships between organisms




Example of Taxonomy (Spider)


✓~ Kingdom- Animalia

Phylum- Arthropoda


Class- Arachnida


Order- Araneae

,Family- Araneidae


Genus- Argiope


Species- argentata




Common name for spider


✓~ Golden orb-web weaver




Families always end with...


✓~ "dae"




Order always ends with...


✓~ "eae"




Cellular Level


✓~ -everything composed in one cell




Tissue Level

, ✓~ -groups of similar cells that have a common function




Organ Level


✓~ -contains two or more types of tissues




Cellular Level Example


✓~ -protozoans

-phylum Porifera (sponges)




Tissue Level Example


✓~ -phylum Cnidaria (sea anemones, jellyfish)




Organ Level Example


✓~ -phylum Platyhelminthes (flatworms, planaria)




3 Levels of Symmetry


✓~ 1) No Symmetry (asymmetrical)

2) Circular Symmetry (pie-shape)

, 3) Bilateral Symmetry (symmetrical)




No Symmetry Example


✓~ Sponge




Radial Symmetry Example


✓~ Coral polyp




Bilateral Symmetry Example


✓~ Platyhelminthes




Which organism was the first to exhibit bilateral symmetry?


✓~ Planaria (phylum Platyhelminthes)




What level of organization is phylum Porifera?


✓~ cellular

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