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Decker Biology B
Unit test 1 History of Earth
| Question | Answer |
|---|---|
| Fossils that consist of minerals that have filled in an open mold of organism are called | natural cast |
| A good index fossil must have what characteristics | very common, easy to identify, existed for a brief time, widespread. |
| The smallest unit of geologic time is a | epoch |
| Bacterium may evolve into mitochondria after going through the process of | endosymbiosis |
| How old do scientists believe the earth to be | 4.6 billion years old |
| The Miller-Urey experiment demonstrated that | energy from lightening might have helped create Earth's first organic molecules. |
| Scientists hypothesize that cyanobacteria changed the early Earth by | adding oxygen to the atmosphere |
| The evolution of sexual reproduction resulted in | increased genetic variations |
| The first land organisms emerged during the | Paleozoic era |
| The age of reptiles is a term often used to describe the | Mesozoic era |
| The unit of geologic time followed that mass extinction of dinosaurs | Cenozoic |
| What group of animals includes modern humans | primates |
| The fossil record identifies the hominid with the largest brain | Homo neanderthalensis |
| Fossil evidence suggest Homo sapiens first appeared | 200,000 years ago |
| Organisms are named and classified based on physical characteristics in | Linnaean taxonomy |
| Which of the following lists Linnaean taxa in the correct order from general to specific. | phylum, order family, genus |
| What is the most abundant group of organisms on earth? | bacteria |
| In the Linnaean system of classification, which of the following is most commonly defined as a group of organisms that can breed and produce offspring? | species |
| How many domains are there in the most current tree of life? | three |
| How many kingdoms are there in the most current tree of life? | five |
| Modern classification system is mainly based on | common ancestry |
| The name Canis lupis is an example of | binomial nomenclature |
| What type of evidence is considered the most accurate in classifying organisms according to the majority of scientists | molecular |
| In Linnaean taxonomy, how are organisms classified into groups? | by physical characteristics |
| How do you write binomial nomenclature? | Genus species E. coli Homo sapiens Australopithecus afarensis |
| The modern classification system is based mainly on ? | genetics |
| Define species? | organisms that can breed and produce fertile offspring |
| How many domains and kingdoms are there in the most current tree of life? | 3 domains and 6 kingdoms |
| What is the Linnean classification system taxa in order from most general to most specific? | domain , kingdom , phylum , class , order , family , genus , species |
Created by:
paigeperkes