Ecosystem Review

What is an example of parasitism?

• Cat and Mouse

• Tadpole and Frog

• Human and Tapeworm

• Caterpillar and Butterfly

Tags

NGSS.MS-LS2-2

In the ocean, a sea anemone attaches itself to the shell of a hermit crab. The stinging arms of the sea anemone protext the hermit crab, while the movement of the hermit crab brings food to the sea anemone.

• commensalism

• mutualism

• parasitism

Tags

NGSS.MS-LS2-2

In a food pyramid, which best explains why the number of organisms decreases from one trophic level to the next?

• Consumers at the lower level require more energy than the top-level consumers.

• Consumers at the top level require more energy than the lower-level consumers.

• The consumers are feeding on larger organisms that have less energy.

• The consumers are feeding on smaller organisms that have less energy.

Tags

NGSS.MS-LS2-3

When animals break down glcose to create energy, they release water and carbon dioxide (CO).

How can carbon dioxide (CO) be reused within the food web?

• It can be used by animals as a source of oxygen.

• It can be used by both plants and animals to produce energy.

• It can be used by plants during photosynthesis to create glucose.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which best explains the role of bacteria in an ecosystem?

• They break down organic matter into necessay nutrient components.

• They release energy from the decomposition of atmospheric gases.

• They convert carbon dioxide and water into simple carbohydrates.

• They absorb energy from the synthesis of inorganic compounds.

Tags

NGSS.MS-LS2-3

Which best determines the number of wolves that can live in an area?

• the amount of snow in the area each year

• the number of birds that live in the area

• the number of trees in the area

• the amount of food available in the area

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

If wolves prey on deer for food, what will most likely happen to the deer population if wolves are removed from an area where deer live?

• The population of deer will increase

• The population of deer will decrease

• The population of deer will remain the same

• The population of deer will become extinct

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which of these organisms is a producer in a marine ecosystem?

• fish

• gull

• algae

• worm

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

A forest food web includes rodents, snakes, and great horned owls.

-Snakes eat rats

-Great horned owls eat mice and snakes

How will the owls most likely be affected by a sudden sharp increase in rodent populations?

• The owl population will either stabilize or increase.

• The owl population sill migrate to another area.

• The owls will have to find another food source or risk starvation.

• Owls will have to compete more with each other for available food.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which would a drought most likely affect?

• all organisms in a particlular ecosystem

• only the plants in a particular ecosystem

• only the animals in a particular ecosystem

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1