WorksheetsBiology, Wednesday Bell Ringer, 4.11.18
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
Which of the following is a fossil?
a)
a plant that has recently died
b)
a group of organisms that can reproduce
c)
a structure or organ that no longer functions
d)
a trace of an organisms that existed in the past
2.
In natural selection, the selective agent is the
a)
humans
b)
mutations
c)
breeders
d)
environment
3.
Which of the following describes natural selection?
a)
it acts on genetic material directly
b)
it acts on existing physical traits
c)
it forms new traits
d)
it forms new genetic material
4.
Genetic variation can arise from a random change in the DNA of a gene. The change is called a(n)
a)
mutation
b)
gene flow
c)
gene pool
d)
allele
5.
What is speciation?
a)
combining of tow species to form one with different traits
b)
isolation that affects mating behaviors
c)
timing of mating that prevents normal sexual selection
d)
divergence of two or more species from an existing one
6.
What is the process in which humans breed organisms for certain traits?
a)
natural selection
b)
inheritance
c)
artificial selection
d)
descent withOUT modification
7.
Which of the following is a term for a group of similar organisms that can reproduce fertile offspring?
a)
individual
b)
population
c)
species
d)
fossil
8.
Why are advantageous traits more likely to be passed onto offspring?
a)
Because they are more likely to survive and reproduce.
b)
Because they come from dominant alleles.
c)
Because they come from recessive alleles.
d)
Because the trait is an acquired phenotype.
9.
Suppose an ecosystem changes. One
kind of organism CANNOT adapt to this change and they begin to die off faster
than they can reproduce. This organism is most likely to ___________.
a)
a. recover
b)
b. become angry hiding
c)
c. become extinct
d)
d. go into hiding
10.
When populations increase because animals are moving into a population?
a)
Emigration
b)
Limiting Factors
c)
Immigration
d)
Exponential Growth
100 %
