Fish picking off and eating bits of algae or parasites from a turtle's shell is an example of

• competition

• predation

• commensalism

• mutualism

Tags

NGSS.MS-LS2-2

A consumer that hunts is called:

• a producer.
• an omnivore.
• a predator.
• a herbivore.

What is prey?

• An organism that is consumed
• An organism that consumes
• neither

The number of organisms within a certain defined area is called a ________________?

• population

• community

• niche

Which is a true statement?

• Humans depend on oxygen, plants depend on carbon dioxide

• Plants produce carbon dioxide

• Humans depend on carbon dioxide, plants depend on oxygen

• Humans don't depend on plants for the air they need

Tags

NGSS.MS-LS1-6

A food web diagram is provided. Which of the following organisms depend only on producers for energy?

• diatoms

• shrimp

• amphipods

• squid

Tags

NGSS.MS-LS1-6

The graph below shows populations, over several years, for two animals that share a habitat. Foxes are mammals that hunt for food, and grouse are birds, a common prey animal of foxes. According to the data, in which year did the population of foxes show a decrease that is most likely the result of a decrease in the availability of a source of food?

• 2003

• 2005

• 2008

• 2012

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The milkweed plants serves an important role in the life cycle of the monarch butterfly. Adult butterflies lay their eggs in the milkweed, and then caterpillars eat the same plant during their development. Based on the relationship between the monarchs and milkweed, which of the following trend would be predicted when looking at the data on the population of these two organisms.

• Population decreased in monarch butterflies should follow population decreased in milkweed.

• Population of monarch butterflies should remain constant when milkweed population decreases.

• Population increase in monarch butterflies should follow population decrease in milkweed.

• Population of milkweed should remain constant when monarch butterfly population increases.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Eagles and grizzly bears live together in the same habitat. There will be competition between the eagles and the grizzly bears only if which of the following is true?

• Grizzly bears hibernate during the winter while eagles reamin active.

• Pesticides in the fish population affect eagles eggs and decrease their population.

• Both grizzly bears and eagles feed on the same species of salmon.

• Laws prevent humans from being able to hunt Eagles or grizzly bears.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following describes a symbiotic relationship?

• Owl and field mouse

• Oak tree and pine tree

• Spider and fly

• Shark and remora fish

Tags

NGSS.MS-LS2-2