Biodiversity/Sustainability/Habitats

Front

Why does increased biodiversity result in a more sustainable ecosystem?

Back

A greater variety of species present allows more organisms to adapt after changes occur.

Front

Which ecosystem is likely to be the LEAST sustainable based on species observations in four local ecosystems?

Back

Ecosystem 1, because it has the fewest species.

Front

How does biodiversity contribute to the sustainability of an ecosystem?

Back

All of the above: 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 presence 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.

Front

Which ecosystem would be more likely to survive if a disease killed the grasses?

Back

The forest ecosystem, because most of the animals can eat other organisms.

Front

Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?

Back

Mosses and lichens that can grow on rocky surfaces.

Front

Both primary and secondary succession begin with pioneer species that-

Back

modify the area and allow larger and more complex organisms to appear.

Front

Some students take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession. Which of these will most likely occur first? Options: Development of topsoil, Growth of weeds and grasses, Growth of trees and shrubs, Development of a stream.

Back

Growth of weeds and grasses

Front

The final stable community that is made up of mature, hardwood trees is called

Back

climax community

Front

A pioneer species such as __________ are a combination of algae and fungus that grow on bare rock.

Back

Lichens

Front

A hurricane hits a coastal prairie and destroys the habitat. Years later there is an appearance of small plants with rapidly spreading roots. This vegetation describes

Back

secondary succession