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Biology 121 Midterm Exam- U of S 2025 Questions and Answers endemic species - ....ANSWER☑️☑️...-Species that is found in only one or a very small number of place cosmopolitan species - ....ANSWER☑️☑️...-species that occur in most regions of the world biological adaptation - ....ANSWER☑️☑️...-an anatomical structure, physiological process or behavioral trait of an organism that increases the expected long-term reproductive success of the organism marine iguana adaptations - ....ANSWER☑️☑️...-flattened tail to swim; blunt noses to graze on seaweed & algae; salt glands under skin, between eyes, on side of head blue footed booby adaptations - ....ANSWER☑️☑️...-- Streamlined shape, large tail, and nostrils that closed: useful for diving - large, webbed feet propel the bird through water at high speeds - specialized salt-secreting glands manage salt intake while at sea - uropygial gland (for waterproofing) What is biology? - ....ANSWER☑️☑️...-The scientific study of life/living things What is the unifying principle of biology? - ....ANSWER☑️☑️...-Evolution: living things gradually change from one form to another over time Biology Museums are called? - ....ANSWER☑️☑️...-Museums of natural history FOR STUDY PURPOSES ONLY ©️ 2025 ALL RIGHTS RESERVED 1