Ecological Levels and Relationships

Why do you think it is important for us to understand energy flow between the trophic levels?

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

The diagram shows the levels of organization within an ecosystem. The center circle represents an individual animal and each larger circle represents a larger ecological group. The second circle would represent a/an?

• community

• ecosystem

• organism

• population

The Hawk in this food web would be considered a --

• Producer

• Primary consumer

• Secondary consumer

• Tertiary consumer

Tags

NGSS.MS-LS2-3

Which of the following best describes the hierarchical levels of ecological organization from smallest to largest?

• Organism, Population, Community, Ecosystem, Biosphere

• Population, Organism, Community, Ecosystem, Biosphere

• Community, Population, Organism, Ecosystem, Biosphere

• Ecosystem, Community, Population, Organism, Biosphere

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.

• mutualism

• commensalism

• competition

• parasitism

Tags

NGSS.MS-LS2-2

Which symbols best describe commensalism?

• +,+

• +,-

• +0

• 0,0

A species that has a disproportionately large effect on community structure relative to their abundance.

• Pioneer Species

• Invasive Species

• Keystone Species

• Foundation Species

Which symbols best describe parasitism?

• +, +

• +, -

• +, 0

• -, 0

Tags

NGSS.MS-LS2-2

organisms that relies on other organisms for food; consumer

• herbivore

• decomposer

• heterotroph

• species

Tags

NGSS.MS-LS2-2

Which symbiotic relationship is when one organism benefits and the other is not impacted (positively or negatively)?

• Predation

• Mutualism

• Commensalism

• Parasitism