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- 1. Multiple Choice
Biomass is the amount of living material present in an environment. Biodiversity refers to the variety of living things that are present in an ecosystem. Which of the following would you expect to occur over time as ecological succession moves forward?
increases in both biomass and biodiversity
decreases in both biomass and biodiversity
increases in biomass, but decreases in biodiversity
decreases in biomass, but decreases in biodiversity
- 2. Multiple Choice
Which of the following animal niches will be filled first as an ecosystem begins the stages of ecological succession?
carnivore
scavenger
herbivore
apex predator
- 3. Multiple Choice
The diagram shows how one community of organisms replaces another until which of the following is reached?
pioneer community
marine biome
ecological pyramid
climax community
- 4. Multiple Choice
Lava from a volcano cools and becomes new, barren land. If this land is completely barren, then it would contain –
only abiotic factors
only biotic factors
both abiotic and biotic factors
neither abiotic or biotic factors
- 5. Multiple Choice
What ecological factors changes throughout the process of succession and allows for the formation of a forest community?
defense from attack by parasites
more sunlight to warm the ecosystem
the depth of the soil
the amount of sunlight
- 6. Multiple Choice
A student counts 14 dogs in his neighborhood. When he reports this information to his classmates at school he will be telling them about the dog -
population
biome
ecosystem
community
- 7. Multiple Choice
Which of the sequences below is listed from the least complex to the most complex?
ecosystem → community → population → organism
population → organism → ecosystem → community
organism → population → community → ecosystem
community → ecosystem → organism → population
- 8. Multiple Choice
The temperature, amount of rainfall and mineral composition of the soil are all factors that can be used to describe -
a community
an ecosystem
a population
an organism
- 9. Multiple Choice
Each drawing above represents different stages in community succession. Which of the following represents the correct order that the stages would occur during ecological succession?
Q – S – R – T
R – T – Q – S
T – R – Q – S
S – Q – T – R
- 10. Multiple Choice
Which of the drawings above represents the climax community in this succession pattern?
Q
R
S
T
- 11. Multiple Choice
Which of the drawings above represents the pioneer community in this succession pattern?
Q
R
S
T
- 12. Multiple Choice
Which of the following is true in a climax community?
the community will constantly evolve and change
They are stable for a long time, with the same species maintaining their population
if one species dies, a new species will fulfill the same role
it goes through a major change called "climax" every few hundred years
- 13. Multiple Choice
What is Ecological Succession?
Competition between plants in a society
The cycle of a tomato plant
A natural disaster such as a flood or fire
The change an ecosystem experiences over time
- 14. Multiple Choice
the first organisms that appear in an ecological community
ecological succession
secondary succession
primary succession
pioneer species
- 15. Multiple Choice
What is the main difference between primary and secondary ecological succession?
Primary begins WITHOUT soil; Secondary begins WITH soil
Primary is the first state and secondary is the second stage
Primary builds plant community; secondary builds animal community.
Primary begins WITH soil; Secondary begins WITHOUT soil
- 16. Multiple Choice
What is an example of an area that is likely to undergo primary succession?
Glaciers melt and leave exposed rock
Plants die from drought and decompose
Land is bulldozed and soil remains
- 17. Multiple ChoiceWhat is the order of succession shown in this figure?A, B, C, DB, A, D, CC, D, A, BD, A, B, C
- 18. Multiple Choice
Primary succession occurs in an area that has:
soil
no soil
some soil
none of these
- 19. Multiple Choice
Which of the following is the correct order of ecological succession?
grass - shrubs - lichens - trees
lichens - shrubs - grasses - trees
lichens - grasses - shrubs - trees
grasses - lichens - shrubs - trees
- 20. Multiple ChoiceWhat is the most important function of pioneer species?To create rocksTo create soil and add nutrients to the environmentTo look niceFood for animals
- 21. Multiple ChoiceThe picture shows what type of succession?primarysecondarytertiaryquadanary
- 22. Multiple ChoiceThe picture shows what type of succession?primarysecondarytertiaryquadanary
- 23. Multiple ChoiceWhat is the correct order from oldest (happened first) to youngest (happened last) in this pond succession?A, B, C, DD, C, B, AB, A, D, CC, D, A, B
- 24. Multiple Choice
What factor drives the process of terrestrial succession in which this lake
becomes a forest?
growth of microorganisms
increases in insect population
deposition of sediments
increases in pH of the water
- 25. Multiple Choice
After a long period of time, a pond or lake will eventually become a stable forest community that is referred to as the-
pioneer community
biosphere
climax community
moss population
- 26. Multiple Choice
Biodiversity describes the amount of variation present in an ecosystem. How is the biodiversity of an ecosystem affected as it proceeds through the stages of ecological succession?
the biodiversity increases throughout
the biodiversity decreases throughout
the biodiversity decreases, then increases
the biodiversity remains steady throughout
- 27. Multiple Choice
Which sequence best represents the stages of succession that would most likely occur?
bare rock → forest → moss → lichens
grassland → forest → marsh → lake
lake → marsh → grassland → shrubs → forest
pine forest → grassland → shrubs → lichens
- 28. Multiple Choice
Ecological succession would best be defined as –
the natural cycle of carbon being exchanged between producers and consumers
communities replacing each other until a stable community is formed
ecosystems being consistently altered by a number of natural disasters
energy flowing through organisms in complex food webs
- 29. Multiple Choice
Which statement best describes a pioneer population found in the beginning of ecological succession?
They are completely heterotrophic.
They do not appear until animals arrive.
They modify their environment.
They only exist in tropical biomes
- 30. Multiple Choice
Species diversity at the beginning of succession is
Low
High
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