Ecosystems

An organism's niche can change throughout its life cycle. Which does NOT correctly show how an organism's niche can change?

• Tadpoles live in water, but adult frogs live on land

• Caterpillars do not have wings, but adult butterflies can fly

• A baby chick cannot lay eggs, but an adult chicken can lay eggs

• Seedlings make their own food, but fully grown plants don't

Which of these is the best example of organisms interacting with each other in an ecosystem?

• a buffalo drinking water

• a bear catching a fish

• a rabbit running across the sand

• a pig rolling in the mud

Tags

NGSS.MS-LS2-2

A student made this diagram to show the levels of ecological organization. Which Level most likely represents an ecosystem?

• Level 1

• Level 2

• Level 3

• Level 4

Tags

NGSS.MS-LS2-3

Which diagram best represents a community?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Look at the table. Which of the following should replace the question mark in the table?

• mice living in a meadow

• plants living in a meadow

• animals living in a meadow

• animals and plants living in a meadow

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A sample food chain is shown below. grass → insect → lizard → hawk The energy moves through the food chain directly from the

• grass to the lizard.

• insect to the hawk.

• lizard to the hawk.

• hawk to the grass.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

The main function of a producer in an ecosystem is to

• absorb minerals from the soil.

• change water vapor into a liquid.

• make sugar through photosynthesis.

• break down dead plant and animal matter.

Tags

NGSS.MS-LS1-6

A food web is shown. What would most likely happen if there were fewer toads?

• There would be fewer grasshoppers and cranes but more caterpillars.

• There would be more grasshoppers and caterpillars but fewer cranes.

• There would be more grass but fewer grasshoppers and caterpillars.

• There would be less grass but more cranes and grasshoppers.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A food web is shown. What is the source of energy for the cricket?

• the Sun

• the frog

• the shrew

• the cattail

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The ultimate source of all energy in a food web is

• energy from animals that are consumed

• energy created by plants

• energy released from the sun

• energy made by decomposers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3