Ecology Test Review

The diagram below 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

Green plants are

• producers
• consumers
• herbivores
• omnivores

What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

An organism that produces its own food supply from inorganic compounds is called a(an)

• heterotroph
• consumer
• detritivore
• autotroph

What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?

• food web
• an ecosystem
• food chain
• a population

which symbiosis is this 

• parasitism 
• mutualism
• commensalism
• competition

symbiotic relationship in which both organisms benefit

• competition
• Mutualism
• Commensalism
• Parasitism

The energy at each trophic level in the pryamid of energy decreases by a factor of ____.

• 10
• 1
• 100
• 2

Tags

NGSS.MS-LS2-3

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

diagram that shows the energy available to each trophic level in an ecosystem; 10% is passed on to upper levels, the rest is lost as heat

• succession 
• cellular respiration
• energy pyramid
• biochemical cycle