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Quiz-Thursday, May 2nd,2013

Name the 4 eras from the youngest to the latest cenozoic, mesozoic, paleozoic, precambrian
What periods are in the 1st era? (2) Quaternary & Tertiary
What periods are in the 2nd era? (3) Cretaceous, jurassic, triassic
What periods are in the 3rd era? (3) 1st, 2nd, Cambrian
Towards the end of this era, creatures w/ more than 1 cell evolved, including jellyfish and _______. Precambrian,sponges
What 3 types of worms were formed int the Precambrian era? segmented worms, flat worms, roundworms
2.5 billion-542 million yrs. ago precambrian
prokaryotes single cell organism w/ nucleus-precambrian
eukaryotes single cell organism w/ no nucleus-precambrian
542-488 million yrs. ago cambrian
488-359 million yrs. ago 2nd
359-248 million yrs. ago 1st
144-165 million yrs. ago cretaceous
213-144 million yrs. ago jurassic
248-213 million yrs. ago triassic
65-1.8 million years ago tertiary
1.8 million-___ quaternary
mammals begin to evolve and take over tertiary
when dinosaurs begin to dominate the earth triassic
the high point if the dinosaurs, first birds, flowering plants, mammals jurassic
flowering plants dominate, flying insects develop dinosaurs become extinct cretaceous
1st reptiles and seed plants and cone bearing trees 1st
first land plants, jaw fish, amphibians, alge is dominant, mushrooms & fungi 2nd
simple inverderbraes, arthropods cambrian
Darwin spent __ years reaserching findings from the HMS Beagle trip 20
Darwin focused on: (2) Finches, tortises
After coming home, Darwin started to investigate: (2) breeds of dogs, varieties of flowers
4 factors that govern natural selection 1)organisms produce more offspring than can survive: 2)variations are found among individual species: 3) some of the variations enable members of a population to survive and reproduce better than others: 4) over time, more of the individuals with the help
Created by: bml9913