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- 1. Multiple Choice
An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off. Increased biodiversity results in a more sustainable ecosystem because -
a greater number of plant species means that there is less barren land
a greater variety of species present allows more organisms to adapt after changes occur
the transition area between two ecosystems is narrower
there are fewer species to be affected by environmental stresses
- 2. Multiple Choice
Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainablity of an ecosystem?
The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.
Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.
The precesnce of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.
All of the above
- 3. Multiple ChoiceWhat does biodiversity mean?Only one species in an area.The different amount of species in an areaAll abiotic lifeNitrogen fixation
- 4. Multiple Choice
Image "B" shows more biodiversity than image "A". Why?
Because "B" shows more different species than image "A"
Because image "B" has less different species than "A"
"A" has a greater number of same species plants so this statement is wrong.
Both images show the same biodiversity
- 5. Multiple Choice
Biodiversity is important to keep an area (biome) healthy. In this example "Food Web A" is sustainable. Why is sustainability important for an ecosystem in "Food Web A".
If one organism is removed the food web can still operate (work) with little or no negative effect.
If an organism is removed the food web will collapse and will affect the environment.
- 6. Multiple Choice
Food Web B is an example of...
Low biodiversity and low sustainability. If the producer dies then all the food web will suffer.
High biodiversity and high sustainability. If an organism is removed the food web will continue with no effect.
- 7. Multiple ChoiceWhen there is higher biodiversitymore 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
- 8. Multiple ChoiceA 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.
- 9. Multiple ChoiceHow do biodiversity and sustainability work together?The lower the biodiversity the greater the sustainability.The higher the biodiversity, the less sustainable the ecosystemThe higher the biodiversity, the greater the sustainability.Biodiversity has nothing to do with sustainability.
- 10. Multiple ChoiceHigh biodiversity ishaving 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.
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