WorksheetsGr 12 Review Succession and Ecosystem Diversity
Total questions: 25
Worksheet time: 37mins
When there is higher biodiversity
more organisms are likely to die because they can't adapt to environmental changes.
there is less diversity.
there is more diversity and higher sustainability of life.
there is more diversity and lower sustainability of life
A small marine area has phytoplankton as its only producer. Should the marine biologist be concerned about this ecosystem?
No the fish do not need the phytoplanton. Since there are so many fish, there is high biodiversity.
Yes, this ecosystem has low biodiversity. Without a producer the herbivores will die out leaving no food.
Yes, this system has high biodiversity; however the fish can adapt and get food from another source.
Yes, the fish will overate to get all of the phytoplankton that is left, then they will die.
How do biodiversity and sustainability work together?
The lower the biodiversity the greater the sustainability.
The higher the biodiversity, the less sustainable the ecosystem
The higher the biodiversity, the greater the sustainability.
Biodiversity has nothing to do with sustainability.
High biodiversity is
having a lot of the same organism.
having a few of the same organism.
having a lot of variety of different organisms.
only having one of each organism.
How do lichens contribute to primary succession?
Lichens decompose organic matter from animals and plants
Lichens begin to break down rock to form soil
Lichens are nitrogen fixing bacteria
Lichens convert carbohydrates into fossil fuels.
What is formed during primary succession that doesn't need to be formed during secondary succession?
pioneer species
soil
climax community
lichens
What type of succession is shown going from figure A to figure B?
primary succession
eutrophication
secondary succession
intermediate
After a forest fire, an ecosystem would start regrowth through -
primary succession
secondary succession
climax community
limiting factors
starts with bare rock followed by lichen
primary succession
secondary succession
both types of succession
Tool used by a taxonomist to identify an unknown organism is a:
dichotomous key
binomial nomenclature
scientific name
binomial key
Which of the following ecological disturbances could lead to primary succession?
volcanic eruptions
glacier movement
earthquakes
forest fires
mountaintop removal
Which of the following ecological disturbances could lead to secondary succession?
volcanic eruptions
pollution, including use of pesticides and herbicides
storms - hurricanes, tornadoes, etc.
forest fires
deforestation
What is species richness?
the number of different species in a sample
the abundance (number of individuals) of each species in a sample
What is species evenness?
the number of different species in a sample
the abundance (number of individuals) of each species in a sample
the variety of ecosystems, communities, or habitats within an area:
genetic diversity
species diversity
ecosystem diversity
the differences in DNA among individuals of a population or species:
genetic diversity
species diversity
ecosystem diversity
species that is in danger of extinction throughout all or a significant portion of its range:
biodiversity hotspot
endemic organism
endangered species
threatened species
species with a declining population that is likely to become endangered throughout all or part of its range:
biodiversity hotspot
endemic organism
endangered species
threatened species
unique to a defined geographic location (not found anywhere else):
biodiversity hotspot
endemic organism
endangered species
threatened species
Which examples have characteristics of primary succession?
1 and 2
1 and 4
2 and 3
2 and 4
Which examples have characteristics of secondary succession?
1 and 2
1 and 4
2 and 3
2 and 4
Which of the following real-life events could represent Example 1?
The regrowth of a forest after a devastating fire
The formation of an island ecosystem from a hot spot in Earth’s crust
The formation of sand dunes
All of the above
Which of the following real-life events could represent Example 3?
The regrowth of a forest after a devastating fire
The formation of an island ecosystem from a hot spot in Earth’s crust
A grassland ecosystem emerging after a severe flood
All of the above
What is ecological succession?
A species that is first to establish itself in an area.
a series of predictable changes that occur in a community over time.
A stable, mature community.
A process which involves living organisms breaking down bare rock.
What is a difference between primary and secondary succession?
Primary succession results in a climax community, whereas secondary succession results in a destroyed community.
Primary succession starts with bare rock, whereas secondary succession starts with an already established community of plants.
. Primary succession takes a shorter amount of time because it begins with already established soil, whereas secondary succession takes a longer period of time because it begins with bare rock.
Primary succession takes a longer period of time because it begins with bare rock, whereas secondary succession takes a shorter amount of time because it begins with already established soil.
