Ecosystem Structure and Energy Flow Questions

A biomass pyramid illustrates the number of organisms that are at each trophic level

• true
• false

A food chain represents a single avenue of energy transfer. In reality, there are numerous relationships between a single species and the other species in its community, so energy might travel along any of several paths.

• true
• false

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Organisms that can make their own food are called:

• producers
• omnivores
• consumers
• carnivores

Tags

NGSS.MS-LS2-3

Food chains are more complex than food webs.

• True
• False

In this picture, the blue tit is a ________________.

• first-level or primary consumer
• second-level or secondary consumer
• third-level or tertiary consumer
• producer
• You can't tell from this information

Tags

NGSS.MS-LS2-2

An organism that must get nutrients by eating other organisms is called a

• consumer
• producer
• decomposer
• nitrifying bacterium

Any being that uses the sun’s energy to create sugars is a

• primary producer.
• secondary producer.
• primary consumer.
• secondary consumer.

Tags

NGSS.MS-LS1-6

Characteristics of an organism's environment that can limit population growth are called

• carrying capacity
• limiting factors
• biotic factors
• abiotic factors

Tags

NGSS.MS-LS2-4

Communities of bacteria are found to be living thousands of feet underwater in the ocean. Which of the following statements is a proper conclusion?

• they are living on borrowed time
• somehow they are conducting photosynthesis
• they were somehow introduced by human activties
• they use an energy source other than sunlight such as hydrothermal vents

Humans are generally

• carnivores
• herbivores
• detrivores
• omnivores