Ecosystems

Front

What would most likely happen in the ecosystem shown in the food web if the fox population significantly increased?

Back

The population of mice would decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Front

Which population will most likely decline as a result of decreased food availability after introducing cats to control rats? Options: the snake population only, the snake, rat, and insect populations, the insect population only, the rat population only.

Back

the snake population only

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Front

Which organism in the food web is a predator of deer? Options: rabbit, plant, fox, owl, chipmunk.

Back

fox

Tags

NGSS.MS-LS2-4

Front

A dodder plant wraps itself around the stem of a clover plant, seriously damaging the clover. Small root-like structures from the dodder allow it to gain nutrients and water from the clover. Which type of relationship does this represent?

Back

parasitism

Tags

NGSS.MS-LS2-2

Front

Rabbits and sheep both graze on shrubs, grasses, and other plants. The sharp rise in the population of rabbits in a region may result in a shortage of plants for sheep to graze upon. This relationship between sheep and rabbits is an example of _________.

Back

competition

Tags

NGSS.MS-LS2-4

Front

Relationship between a bee feeding on nectar and a flower.

Back

mutualism

Tags

NGSS.MS-LS2-2

Front

Why are there very few organisms toward the top of the energy pyramid?

Back

There is much less energy available at the top of the pyramid.

Tags

NGSS.MS-LS2-3

Front

What is the ultimate source of energy for all organisms in a food web?

Back

the sun

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

The graph shows the populations of two species over time. Species 2 is a parasite of Species 1. No other species is interacting with Species 1 or Species 2.

If the population of Species 1 decreased, what would most likely happen first to Species 2?

Back

Species 2 would increase in number.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Front

What will most likely happen if the three-toed sloth population continues to decline? Options: The population of moths will thrive by inhabiting the fur of another tree-dwelling mammal. The algae will adapt to living on tree trunks and low-hanging branches. The population of moths will decline because of fewer places to lay eggs. The algae will survive by breeding with another photosynthetic organism.

Back

The population of moths will decline because of fewer places to lay eggs.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4