Ecosystem Dynamics

Invasive splant species can?

• A. Be helpful for the environment

• B. Reduce the abundance of native species

• C. Cost millions of dollars in management

• D. B and C

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A species which serves as an early warning sign that a community or ecosystem is being altered or degraded.

• Keystone species

• Native Species

• Indicator Species

• Alarm Species

What is an invasive species?

• A non-native to the ecosystem and causes economic or environmental harm

• Humans

• Organisms crossing land bridges

• None of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

According to key below, which animal has wings covered by an exoskeleton and a round body?

• Ladybug

• Grasshopper

• Dragonfly

• Housefly

Invasive species are a concern because they?

• Spread rapidly and overtake native plants

• Smell nicely

• Provide food for humans

• Are pretty

Tags

NGSS.MS-LS2-4

Biodiversity revers to

• Extinct species

• Nonrenewable resources

• The variety of species on Earth

• The rate of species decline

Tags

NGSS.MS-LS2-5

NGSS.MS-LS4-1

When taken to a new habitat, non-native plants often threaten native plants of the new habitat. Why do they do this?

• Non-native plants are able to mutate rapidly

• Non-native plants cause native animals to relocate

• Non-native plants are able to be used for medicine

• Non-native plants compete with native plants for resources

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Sea otters move into the ocean bay. They eat all the sea urchins. Which change will it cause?

• Kelp to have less food

• Crabs to have more food

• Sea ducks to have less food

• Artic foxes to have more food

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Term for non-living things

• Abiotic

• Biotic

• So sad

• Too bad

Tags

NGSS.MS-LS2-3

A dichotomous key for trees is provided. Hikers found a tree that has large brown cones and single sharp needles. What species of tree have the hikers found?

• Juniper

• Spruce

• Pine

• Fir