Biodiversity Practice

A South American rainforest is usually more productive when it contains diverse plant communities. How does biodiversity of a South American rainforest affect its sustainability?

• The biodiversity allows for plant communities to survive when the ecosystem experiences severe weather

• the biodiversity prevents all plant communities from surviving during a blizzard

• the biodiversity prevents some plant communities from surviving during stable climate

• the biodiversity allows some plant communities to survive when the ecosystem experiences slight differences in the weather

Why is loss of biodiversity a big deal?

• humans need other organisms for food, clothing, oxygen, and shelter

• biodiversity is a big deal, extinctions don't matter

• biodiversity only matters after a volcano erupts

• the impact of biodiversity is so small and not noticeable.

Why statement isn't true?

• a new species in an ecosystem is always invasive

• plants or animals could be invasive

• invasive species affect biodiversity

• humans help to spread invasive species

Provide an example of an endemic species.

• opossoms that carry many diseases

• fireflies that light up at night

• The Asiatic Lion because it is only found in India

• ants because they can live anywhere

Biodiversity is measured by the number and abundance of species diversity. Which statement is a solution to biodiversity loss?

• introduce invasive species such as Kudzu which can prevent erosion

• find the keystone species and isolate them away from others

• remove decomposers to help provide more organic materials to plants and animals

• Inspect ships and airplanes traveling through foreign air and water to prevent from carrying invasive species that outcompete the native species

The sea otter (shown below) is considered a keystone species as their consumption of sea urchins, preventing the destruction of kelp forests caused by the sea urchin population. The sea otter is an example of what type of species

• endangered

• indicator

• invasive

• keystone

Keystone species are so influential to their ecosystems. Which is NOT a factor that keystone species influence?

• decrease the amount of precipitation (rainfall)

• create beneficial symbiotic relationships with other organisms

• provide food sources for predators

• help to maintain the energy flow through the ecosystem

What is species diversity?

• the different animals in an area

• the different habitats in an area

• the different plants in an area

• the different living things (plants and animals) in an area

Tags

NGSS.MS-LS2-5

What is an invasive species?

• an organism that IS native to an area and causes harm to the environment/humans

• an organism that is NOT native to an area and causes harm to the environment/humans

• an organism that is NOT native to an area and helps the environment/humans

• an organism that IS native to an area and helps the environment/humans

Tags

NGSS.MS-LS2-5

Which of the following answer choices best fits the definition of a keystone species?

• any organism that is crucial to the functioning of an ecosystem and affects the survival of many other species

• plants that help spread the energy of the sun to other organisms in the ecosystem

• animals that are affected by other organisms and their activity, like a chain reaction

• animals that have no significant contributions to an ecosystem where they abide