Name:
Date:
Class:
Checkpoint #2 Review
1. Birds of all species have different shaped and sizes of beaks. Using
complete sentences, describe why birds like the Hood mockingbird has a
longer beak than the other species of mockingbirds. ________________
__________________________________________________________
__________________________________________________________
2. To observe ecological succession, a science class created a succession plot in their school habitat by pulling all the
weeds, grass and plants in a 2 meter x 2 meter section. They are going to observe the succession plot for 6 months
and record observational data in their science journals. Create 3 questions that the students could answer by making
observations of the succession plot. Use the diagrams to help you formulate these questions.
1. ____________________________________________________________________________________________
2. ____________________________________________________________________________________________
3. ____________________________________________________________________________________________
3. Review the diagram of the food chain. Describe how decomposers
contribute to food chains within a community. _________________________
_____________________________________________________________
_____________________________________________________________
Why don’t the dead bodies of animals and dead plant matter accumulate in an
ecosystem? ____________________________________________________
______________________________________________________________
______________________________________________________________
4. Based on the energy pyramid, which consumers receive the largest
amount of energy from producers?
_______________________________________________
5. Compare the 2 food webs.
Which food web has the
greatest biodiversity of plants?
A
A
or
B
B
Describe what would happen if
the grass in food web B’s
community got a disease and
died? _____________________
__________________________
__________________________
__________________________
6. Describe how natural selection played a role in elephants having long trunks.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
7. Us the table below and create an energy pyramid placing the organisms on the correct trophic level.
8. List 3 mutations of armadillo’s that could be FAVORABLE when passed on to their offspring.
1.
2.
3.
9. Selective breeding has been used for 100’s of years to create plants and animals with specific traits. Breeders are
wanting to create a new species of German shepherd that is smaller and less furry. It will take many generations of
German shepherds to produce these desired physical traits. Humans selectively choose smaller shepherds with less fur
and breed them to try and create the desired genetic traits from generation to generation until the desired traits are
achieved.