Plant Growth and Ecosystem Interactions

Anita grew two different plants under the same conditions. She wonders how Plant 1 can grow if it doesn’t have large leaves like Plant 2. Why can both plants grow successfully?

• Plant 1 is receiving more sunlight than Plant 2.

• Plant 1 has deeper roots than Plant 2.

• Both Plant 1 and Plant 2 are receiving air and water.

• Plant 2 does not have leaves that are able to absorb sunlight.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which model would be the best to demonstrate competition and interdependence in the ocean?

• Food chain

• Food web

• Energy pyramid

• Ecocolumn

Tags

NGSS.MS-LS2-2

There are very few decomposers in the tundra. Which reasoning best explains why?

• Few biotic factors die in the tundra so there is nothing for decomposers to break down.

• The cold temperatures cause the dead plant and animal matter to break down naturally.

• The tundra is composed of only producers and primary consumers.

• Decomposers like worms or bacteria cannot survive in cold climates.

Tags

NGSS.MS-LS2-2

Over millions of years, the Colorado River eroded away the land to form the Grand Canyon. How did the spheres of Earth interact during this process?

• The atmosphere caused erosion that shaped the biosphere.

• The hydrosphere caused erosion that shaped the geosphere.

• The biosphere caused erosion that shaped the atmosphere.

• The geosphere caused erosion that shaped the hydrosphere.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

A teacher asks her students how a caterpillar finds the energy to turn into a butterfly. Rennick answers, “Plants.” Frida answers, “The Sun.” Who is correct?

• Only Rennick is correct.

• Only Frida is correct.

• Both students are correct.

• Neither student is correct.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Plants that grow in the ocean are often found in shallow water. Why?

• Ocean plants cannot grow roots.

• The water near the surface contains more carbon dioxide.

• There is more sunlight in shallow water.

• There are fewer predators in shallow water.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

How does water from a lake create a pond on a mountainside? List the steps from first to last.

• Condensation, evaporation, precipitation, collection

• Evaporation, condensation, precipitation, collection

• Precipitation, collection, evaporation, condensation

• Collection, precipitation, evaporation, condensation

Tags

NGSS.MS-ESS2-4

Humans pollute the lake with oil and waste. How might this affect the water cycle?

• The water will evaporate faster.

• The water will not be able to evaporate as well.

• The water will freeze more quickly.

• The water will become cleaner.

Tags

NGSS.MS-ESS2-4

Which of the following is a reasonable solution to reduce water pollution in rivers?

• Set up trash cans along the river.

• Plant more trees along the rivers.

• Stop traveling by airplane.

• Introduce new types of fish to the river.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ETS1-1

How could an animal be considered both a primary and secondary consumer?

• By eating only plants.

• By eating only other animals.

• By eating both plants and other animals.

• By eating only insects.

Tags

NGSS.MS-LS2-3