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7th grade classification test

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Question
Answer
science of naming & classifying organisms   taxonomy  
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when taxonomists group species that share common ancestros closer together   biological relationship  
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involves classification that allows one to organize a large amount of information so it is easy to find and understand   good system  
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is one of the sequences that DNA is composed of-also thymine, guanine, and cytosine   Adinine  
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allows taxonomists to organize a lot of data so it is easy to find and understand   classification benefits  
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is how scientists know about extinct species and is based on how animals have changed in the past   fossil record  
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helps taxonomists show relationship "genetically" among organisms that are not obvious by just observing physical traits   molecular evidence  
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is important evidence to see how species adapted to certain environmental conditions   habitat variations  
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is criteria such as physical evidence, habitats, biological reltionships, and DNA   physical traits  
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allows people speaking different languages to refer to all organisms the same way   universal naming  
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use geological relationships to classify minterals by physical observation, optical methods, and x-ray diffraction   geological  
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found in the upper most recent layers of EEarth are the most recent in age. The one found in the lower layers of Earth are the oldest   fossils  
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is the Greek word meaning "arrangement"   Taxis  
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process of arranging organisms into groups based on similarities   classification  
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determined the molecular structure of the DNA molecule and made a model of the double helix   Francis Crick  
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help scientists make comparisons about two or more organisms and their characteristics   percents  
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scientists look at this to compare the genes of an organism   DNA  
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Created by: fhershey