WorksheetsNatural Selection & Speciation
Total questions: 26
Worksheet time: 14mins
The change in the characteristics of a population over time is _________________.
evolution
transition
variation
adaptation
____________ cause variations among the population.
mutations
adaptations
a desire to change
injuries
Slight differences in an inherited trait between individual members of the same species:
variations
adaptations
homologous structures
analogous structures
An inherited trait that increases an organisms's chance of surviving and reproducing:
variation
adaptation
vestigial structure
mutation
When an organism has a trait that allows it to blend in with its environment, we call that ____________
mimicry
camouflage
lucky
copycatting
When an organism has a trait that makes it resemble another species, either in looks or behavior, we call that _______________
mimicry
camouflage
copycatting
lucky
A natural disaster randomly changes the diversity of a population. This is an example of __________
natural selection
genetic drift
biodiversity
homologous structures
What are the steps of natural selection? (choose all that apply)
Animals have more kids than they expect to survive.
All offspring are identical.
There is competition for limited resources.
Some will live and some will not.
What are things that can be done to reduce the spread of antibiotic-resistant bacteria? (choose all that apply)
Take all the antibiotic pills when prescribed.
Do not consume food raised with antibiotics.
Only use antibiotics when necessary.
Always use antibacterial soap.
Two similar species of birds will not mate because they do not recognize each other's songs/calls is an example of what kind of isolation?
Temporal
Behavioral
Geographical
Ecological
When two species emerge from a single species is called:
speciation
specialization
specificity
divergence
Choose true statements (select all that apply)
Those with traits best-suited to their environment are more likely to survive to reproductive age and pass their genes on to the next generation.
Evolution is survival of the fittest (or good enough)
Individuals can evolve new traits during their lifetime.
Evolution acts with a goal in mind.
Several species of plant evolved differently on the Hawaiian islands is an example of what type of isolation?
behavioral
ecological
temporal
geographical
What is the definition of a species?
Organisms that do not interbreed.
Organisms that do not interbreed AND can produce fertile offspring.
Organisms that can interbreed but not produce fertile offspring.
Organisms that reproduce asexually.
A proposed explanation to an observation is called a ____________
law
hypothesis
theory
fact
When you make conclusions without actually being able to see everything is called a(n) ____________
hypothesis
observation
inference
conclusion
The result of many experiments that represent our best understanding is known as a ____________
law
hypothesis
theory
fact
A generally-agreed upon observation that anyone can make is known as a _________.
law
hypothesis
fact
theory
A statement or formula that is always true given a set of conditions is known as a ___________.
law
hypothesis
theory
fact
Those individuals who are best suited to their environment having an advantage and being more likely to survive and reproduce is known as ____________
natural selection
evolution
artificial selection
hunger games
Males drive natural selection by generally...
competing with other males over access to females and to impress them
being picky about which female to mate with
waiting for females to court them
Females drive natural selection by....
competing with other females for access to males
being picky about which males to mate with
seeking out any male to mate with
What is evolutionary adaptation? (select all that apply)
a change in structure or habits (behavior) that are often inherited
organisms improve their condition in relation to their environment
occurs over a long period of time (many generations)
a quick change during an individual during their lifetime
What is natural selection?
a short change over a short period of time
the process by which organisms better suited to their environment will survive and reproduce
the process of cells dividing to make new cells
asexual reproduction of bacteria
What are the finches of the Galapagos Islands an example of natural selection?
Their feathers allow them to fly around and catch prey.
They have long legs that help them with high amounts of water.
The size and shape of their beaks have allowed them to eat certain food.
The shape of the birds' feet allow them to swim from island to island.
When HUMANS make decisions about which organisms get to breed or which organisms get to survive to reproductive age, this is called ______________.
artificial selection
natural selection
adaptation
inherited traits
