Bio 121 exam - Study guides, Class notes & Summaries

Evolution The gradual change in a species over time. Adaptation When the heritable trait increases an individuals fitness in a particular environment. Ancestral trait Is a character that existed in an ancestor. Derived trait Is one that is a modified form of the ancestral trait, found in a descendants. Vestigial trait

Bio 121 exam 2 Questions with Complete Solutions.

Bio 121 Exam 1 Povinelli Questions with Complete Solutions.

Biology - ️️study of life Unicellular - ️️organism with only one cell Multicellular - ️️organism with multiple cells Biosphere - ️️the regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms. Ecosystem - ️️a biological community of interacting organisms and their physical environment. Community - ️️an interacting group of various species in a common location Population - ️️a group of individuals of the same speci...

Which of the following levels of ecological organization is arranged in the correct sequence from most to least inclusive? ecosystem, community, population, organism organism, community, population, ecosystem population, ecosystem, organism, community organism, population, community, ecosystem community, ecosystem, organism, population ANSWER ecosystem, community, population, organism Biologists study how nutrients and energy move among organisms and through water, soil, and air. Wh...

Bio 121 exam 2 Questions with Complete Solutions

Natural Selection - Answer A theory in which individuals with certain traits produce more offspring than others without these traits. Evolution - Answer The gradual change in a species over time. Adaptation - Answer When the heritable trait increases an individuals fitness in a particular environment. Ancestral trait - Answer Is a character that existed in an ancestor. Derived trait - Answer Is one that is a modified form of the ancestral trait, found in a descendants....

Bio 121 Exam 1 Povinelli Questions with Complete Solutions

Ecology is the study of the structure, function, and interactions among natural systems in the biosphere. Abiotic factors are non-living physical conditions such as weather, climate, geological characteristics and phenomena, and geographical structure. Biotic factors are those 'living' characteristics of the environment such as organisms and their products. Biosphere The biosphere is the area on Earth where life may exist. The physical platform for the biosphere is created by the atmosphere ...