WorksheetsSpeciation
Total questions: 20
Worksheet time: 10mins
A flash flood carried a raft of Amazon ants away from their original population. There is enough distance between the two groups, that they will never meet in nature again. What type of isolation is this?
Behavioral isolation
Temporal isolation
Geographic isolation
Which of the following is NOT true in the formation of a new species?
A mutation causes a population to breed with a different species.
Reproductive isolation can occur by the formation of a mountain range.
A population needs to become reproductively isolated.
An isolated population has adapted to new ecological niches eventually result in the inability to reproduce with the original population.
In order to be considered a true species, an organism must be…
Naturally-occurring
Naturally-reproducing
Able to produce fertile offspring
You are researching reptiles and encounter two garter snakes on a hike. Both snakes are brown and white, but their patterns are slightly different. You bring them back to the lab for further study. What is the BEST way to determine if these two are the same species?
Their appearance - if they look similar, they must be the same species
Their adaptations - if they have the same traits, they must be the same species
A breeding experiment - if they are able to produce offspring, they must be the same species
DNA testing - if their DNA/genes are the same, they must be the same species
If a population becomes isolated from other populations of the same species and then genetic differences start to occur, what happens?
Competition
Extinction
Speciation
Fossils form
Temporal isolation is different from behaviorial isolation because, temporal isolation means...
Organisms are not reproducing at the same time
Organisms are physically separated
Organisms are not attracted to the mates attraction signals
What type of isolation has occurred in the image?
Geographic isolation
Temporal isolation
Behavioral isolation
What type of isolation has occurred in the image?
Geographic isolation
Temporal isolation
Behavioral isolation
A population of fruit bats is active at night. Part of the population is most active from 8pm to midnight, and the rest of the bats eat from 1am to 5am. Eventually, the bats don't interact with each other at all. What type of isolation is this?
Behavioral isolation
Temporal isolation
Geographic isolation
When the Grand Canyon in Arizona formed, two populations of one squirrel species were separated by the giant canyon. This is an example of _____________.
Temporal isolation
Behavioral isolation
Geographic isolation
A population is best described as....
When a new species is made from an existing species
A group of individuals in the same species
Mating
Ability of an organism to have children
What do we call a group of individuals that can reproduce successfully in nature?
species
adaptation
speciation
When two or more populations no longer successfully reproduce it is called...
species
adaptation
speciation
a shame
Which are causes of speciation? Choose all that apply
Isolation caused by mountains, rivers and man-made structures
change in timing of mating
change in environment
different mating behaviors
Members of the same species will always have a similar body appearance.
True
False
When members of the same species breed, their offspring are able to produce offspring.
True
False
Members of a species can breed with other members of the same species.
True
False
Some female peacocks prefer males with large, colorful tales while other female peacocks prefer males with no tail at all. Females are beginning to only mate with the type of males with the tail they prefer. What type of isolation is this?
Behavioral isolation
Geographic isolation
Temporal isolation
The flowers of pink tulips open in the morning, while the flowers of lavender tulips open in the early afternoon. The bees that pollinate these tulips cannot carry pollen back & forth between the two types of tulips because of their flowers being closed at different times of day. What type of isolation is this?
Behavioral isolation
Geographic isolation
Temporal isolation
The emergence of new rivers or streams is a type of ____________ isolation.
Temporal
Behavioral
Geographic
