Dynamics in Ecosystems Practice Test

The diagram shows the cycling of nutrients in an ecosystem. The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system? 

• Producers
• Consumers
• Decomposers
• Inorganic nutrients

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10 Kcal
• 1 Kcal
• 100 Kcal
• 1000 Kcal

Tags

NGSS.MS-LS2-3

Position that an organism occupies based on what it eats

• biomass
• autotroph
• trophic level
• carnivore

Tags

NGSS.MS-LS2-3

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show what direction the energy is flowing between organisms.

• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

Tags

NGSS.MS-LS2-2

Which organism receives the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

tertiary consumers

• Eat the primary consumer

• Eat plants and animals

• Consume the producer

• eat the secondary consumer

Tags

NGSS.MS-LS2-3

A primary consumer

• makes its own food

• eats other animals

• is a carnivore

• consumes the producer

Tags

NGSS.MS-LS2-2

Organisms that break down dead or decaying organisms.

• Decomposers
• Producers
• Consumers