WorksheetsCh 12 Change over Time
Total questions: 18
Worksheet time: 9mins
A group of organisms that share similar characteristics and can reproduce among themselves producing fertile offspring
population
species
order
genus
Organisms with traits best suited to their environment are more likely to survive and reproduce.
Survive and advancement
sibling rivalry
natural selection
theory of aquired characteristics
Any variation that makes an organism better suited to its environment.
adaptation
variation
mutation
reproduction
Physical barriers prevent fish from one stream from mating with fish from another stream, leading to a less varied gene pool among those fish. As time passes, the fish become unable to successfully mate with other groups. This is an example of
water bridge
genetic isolation
geographic isolation
geographic continuity
An inherited trait that makes an individual different from other members of its species.
affliction
affection
mutation
variation
Which is NOT a principle of natural selection?
Organisms produce more offspring than can survive.
Variations occur among individuals of a species.
Animals compete for limited resources.
Some variations are passed on to offspring.
In the earliest growth stage, all vertebrates have gill slits and tails. This is an example of...
abnormality
mutation
embryology
gradualism
Cave-dwelling tetra fish (Astyanax mexicanus) are blind; they have small eyes that do not work. This is an example of..
deformation
reverse evolution
natural abnormality
vestigial structure
Which is an example of DNA showing common ancestry?
Humans have 23 pairs of chromosomes and Mountain gorillas have 24 pairs
Lizards and snakes have DNA
Chromosome 18 controls fur color in cats and dogs
bats and raccoons have keen night vision
Fossils are most commonly found in..
igneous rock
metamorphic rock
sedimentary rock
Different animals with similar bone structure is an example of..
vestigial structures
homologous structures
divergent ancestry
Scientists can estimate the age of a rock by comparing the amount of radioactive element with the amount of nonradioactive element. This is known as..
relevant dating
radiometric dating
staged dating
comparative dating
Which of the following is an example of direct observation of evolution?
The shells of tortoises are different from one Galapagos Island to the next.
Fish and chicken embryos look similar.
After many years of use, bacteria become resistant to penicillin.
A bird wing and dog forearm have the same bone structure.
What type of evolution shows the appearance of new species in a relatively short period of time?
speed evolution
Punctuated equilibrium
gradualism
relative evolution
The marine iguana of the Galapagos Islands enters the ocean and feed on seaweed. What is this an example of?
gradualism
punctuated equilibrium
acquired characteristics
adaptation
If an anthropologist finds fossils in sedimentary rock at different depths, what conclusion can be made.
Fossils near the surface are older than deep fossils.
Fossils near the surface are the same age as deep fossils.
Fossils near the surface are younger than deep fossils.
The age of fossils can not be determined by depth.
The model that describes evolution as a slow, ongoing process by which one species changes to a new species is
punctuated equilibrium
Darwinism
gradualism
direct observation
Estimating the age of a fossil based on the idea that younger rock layers are deposited over older rock layers is known as
fossil profile
sedimentation layers
relative dating
estimation dating
