ECO-Resources

Which of the following is the correct path of energy through an ecosystem?

• Autotrophs → Heterotrophs → Decomposers

• Autotrophs → Decomposers → Heterotrophs

• Decomposers → Autotrophs → Heterotrophs

• Heterotrophs → Autotrophs → Decomposers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Certain plants known as legumes (such as beans) have nodules on their roots that contain bacteria. What is the purpose of these bacteria?

• They are a parasite that has infected the plant

• They aid in the uptake of water by the roots

• They take carbon out of the atmosphere for use by the plant

• They transform nitrogen in the air to nitrogen that plants can use

Tags

NGSS.MS-LS2-3

What is the function of autotrophs in the carbon cycle?

• To use carbon dioxide to make glucose

• To take in excess water

• To feed herbivores

• To use oxygen to produce glucose

Tags

NGSS.MS-LS1-6

In the carbon cycle, carbon is transferred from animals to plants by which of the following?

• Cellular respiration

• Photosynthesis

• Excretion

• Water

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is not a process that releases carbon dioxide into the atmosphere?

• Photosynthesis

• Cellular Respiration

• Burning fossil fuels

• Volcanic erruptions

Tags

NGSS.MS-LS1-6

What is the role of decomposers in the carbon and nitrogen cycles?

• They release carbon and nitrogen stored in organisms by breaking them down

• They take carbon and nitrogen out of the atmosphere through photosynthesis

• They create carbon and nitrogen compounds that can be used by plants

• They store carbon and nitrogen

Tags

NGSS.MS-LS2-3

If these organisms were arranged in a food chain, which organism would have the least amount of total energy available?

• Coyote

• Lizard

• Shrub

• Insect

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Why can there be no more than 5 links in a food chain?

• There would not be enough oxygen in the atmosphere for the number of organisms

• The carbon cycle cannot support addition organisms due to a lack of resources

• There is not enough energy left after 5 different transfers

• There is not enough territory to support that number of heterotrophs

Tags

NGSS.MS-LS2-3

In ecosystems, a transfer of energy is called:

• a trophic level

• an energy level

• predation

• thermal exchange

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a sequence found in the nitrogen cycle?

• Nitrogen in the air → Plants → Animals → Bacteria

• Nitrogen in the soil → Animals → Plants → Fungi

• Nitrogen in the soil → Air → Plants → Animals

• Nitrogen in the air → Bacteria → Plants → Animals

Tags

NGSS.MS-LS2-3