
CH 21 Quiz
Quiz by Tiffany
Feel free to use or edit a copy
includes Teacher and Student dashboards
Measure skillsfrom any curriculum
Measure skills
from any curriculum
Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.
With a free account, teachers can
- edit the questions
- save a copy for later
- start a class game
- automatically assign follow-up activities based on students’ scores
- assign as homework
- share a link with colleagues
- print as a bubble sheet
70 questions
Show answers
- Q1The Earth is estimated to be how old?4.65 billion years old5.55 billion years old4.55 billion years old5.65 billion years old60s
- Q2The oldest fossils are how old and what do they resemble?3.5 billion years old and resemble modern cyanobacteria4.5 billion years old and resemble modern cyanobacteria2.5 billion years old and resemble modern cyanobacteria4.5 billion years old and resemble modern Amoebozoa120s
- Q3By studying the similarities and differences among species, biologists can construct a _______________, the evolutionary history of a species of group of speciescladogenesisphylogenycladeanagenesis60s
- Q4What is the purpose of a phylogenetic tree?describing evolutionary relationships between multiple species. It is viewed as a hypothesis because is not static. Things change as more information becomes available.Researchers identify homologous features that are shared by some species but not by others, which allows the grouping of species based on shared similarities.contains groups of species with different common ancestorscontains a common ancestor but not all of its descendants120s
- Q5Complete the statement. New species are commonly formed by ____________.anagenesisCladogenesis120s
- Q6What is this the definition of? A species diverges into TWO or more species.anagenesiscladogenesis120s
- Q7What is this the definition of? A single species evolved into a different speciescladogenesisanagenesis45s
- Q8What is a clade?A common ancestral species and all of its descendant speciesA common ancestral species and some of its descendants120s
- Q9A ___________ is a taxon that is a clade.monophyletic groupbananamonkeypineapple belongs on pizza (; I'm bias sorry120s
- Q10What is the definition of something that is monophyletic?common ancestor and all the descendantscontains a common ancestor but not all of its descendantscontains groups of species with different common ancestors120s
- Q11What is the definition of something that is paraphyletic?contains groups of species with different common ancestorscontains a common ancestor but not all of its descendantscommon ancestor and all the descendants120s
- Q12What is the definition of something that is polyphyletic?common ancestor and all the descendantscontains a common ancestor but not all of its descendantscontains groups of species with different common ancestors120s
- Q13Which is monophyletic? First one or second one?Second picture on the rightFirst picture on the left120s
- Q14What is this a picture of?paraphyleticmonophyleticpolyphyletic60s
- Q15What grouping is this? Look very closely...monophyleticparaphyleticsympatheticpolyphyletic120s