Worksheets7 - Ecological Succession
Total questions: 20
Worksheet time: 1hrs 26mins
Which of the following is the best definition of an ecosystem?
All biotic and abiotic things located in a space no smaller than a forest
All biotic things located within a particular space
All the biotic things located in space the size of a forest
All the biotic and abiotic things located within a particular area
Deforestation occurs when a lumber company cuts down all the trees on 100 acres of heavily wooded land. What will happen first as the land recovers during ecological succession?
Breakdown of rock into soil
Appearance of weeds and grass
Arrival of squirrels
Growth of trees
What would most likely occur after an ecosystem is disrupted by fire?
The ecosystem would eventually return to its original state.
The ecosystem would return to its previous state immediately.
The ecosystem would evolve into a new ecosystem that is totally different from the original.
The ecosystem would become an ever-changing environment with no stability.
After a fire destroys a forest, the area will most likely
remain bare land indefinitely
develop into a desert area
develop into an entirely different type of forest after hundreds of years
recover through gradual changes back to a point of long-term stability
2. Which of the following animal niches will be filled first as an ecosystem begins the stages of ecological succession?
carnivore
scavenger
herbivore
apex predator
The first species to appear in an area:
discovering species
pioneer species
new species
colonizing species
Primary succession begins in an area with:
Bare Rock
Soil
Secondary succession begins in an area with:
Bare Rock
Soil
Lichen is an example of a __________
Last Species
Pioneer Species
Colonizing Species
Which type of succession happens after a fire, tornado or another catastrophic event?
Primary Succession
Secondary Succession
Which type of succession occurs over a period of time?
primary succession
secondary succession
Both successions
What is formed during primary succession that doesn't need to be formed during secondary succession?
soil
grass
pioneer species
lichen
True or False: primary and secondary succession have the same pioneer species.
True
False
Primary succession occurs in an area that has:
soil
no soil
some soil
none of these
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
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
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
What is an example of a disturbance that could bring about secondary succession?
Humans cut down many trees in a small region
A volcanic eruption covers a village in lava.
What type of disturbance can be beneficial to ecosystems and communities?
Volcanic Eruption
Fire
Invasive Species
Flood
Which is faster: Primary or Secondary Succession?
Primary Succession
Secondary Succession
Both Take The Same Amount of Time
