WorksheetsUnit 4 Practice Test (Evolution)
Total questions: 16
Worksheet time: 11mins
Geologic time is divided up by...
specific amounts of time
specific events in Earth's history
the fossil record
Reorder the following time units from biggest to smallest:
eon
era
period
epoch
We are currently in the _____ period of Earth's history
quaternary
devonian
paleocene
cenozoic
Evolution is ______ change over time
behavioral
physical
genetic
political
Which of these are random causes of evolution? (2 answers)
natural selection
genetic drift
artificial selection
mutations
Match the following scenarios to the cause of evolution it describes
light colored animals living in a dark habitat are easily observable and are preyed upon more quickly; over generations, their fur color becomes darker
natural selection
various breeds of horses were created by selective breeding
artificial selection
millions of years ago a brown bear's offspring had a defective gene which prevented it from creating fur pigmentation; now polar bears exist
mutation
a landslide kills off a large part of a plant population; the population's gene pool is greatly changed and future generations lack genetic diversity
genetic drift
Match the following types of isolation:
occurs when two species meet at different times of the year
temporal
occurs when two species occupy different habitats
ecological
occurs when two species have different courtship behaviors
behavioral
occurs when physical differences prevent mating
mechanical
What trait is shared by only birds & reptiles?
hair/fur
vertebrae
egg shells
amniotic egg
Which two creatures are most closely related?
tortoise & horse
wolf & horse
wolf & leopard
leopard & house cat
Which group of organisms has the highest amount of organisms at risk for extinction?
reptiles
amphibians
mammals
birds
Which of these factors might make a species likely to become endangered?
has a low reproductive rate
has a high reproductive rate
eats a highly variable diet
high a high population size
Which of these is the greatest threat to biodiversity?
habitat destruction
climate change
poaching
overuse of resources
Which of these protects endangered species within the United States?
Convention on the International Trade of Endangered Species
Convention on Biological Diversity
Endangered Species Act
Male Dutch Mannequin birds have distinct courtship rituals to attract mates; this prevents them from mating with closely related species (who have different rituals). This is a form of
geographic isolation
habitat isolation
temporal isolation
behavioral isolation
If two populations are prevented from mating because they are active during different seasons of the year, they are...
geographically isolated
temporally isolated
ecologically isolated
behaviorally isolated
A group of organisms of the same type that can interbreed and produce fertile offspring is known as a
community
species
population
hybrid
