Energy & Nutrient Flow in Ecosystems

Which of the following is a good representation of the law of conservation of energy?

• a food web
• rock cycle
• recycling 
• decomposition 

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following is a biotic factor in a desert ecosystem 

• sun
• cacti
• water
• sand

Which of the following is a product of cellular respiration? 

• Glucose
• carbon dioxide
• oxygen
• sunlight

Tags

NGSS.HS-LS1-7

Which of the following is the best example of a decomposer?

• vulture
• bacteria
• algae
• rat

Tags

NGSS.MS-LS2-3

Which of the following correctly explains trophic levels? 

• a classification of animals based on energy consumption
• a classification of abiotic factors based of energy consumption
• a classification of biotic factors based on how energy is consumed
• none of the above 

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

• carbohydrates
• sunlight
• water
• carbon

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

• heterotroph
• consumer
• detritivore
• autotroph

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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

What is the term for each step in the transfer of energy and matter within a biological community?

• energy path
• food web
• trophic level
• food pyramid

Tags

NGSS.MS-LS1-6

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. 

Tags

NGSS.MS-LS2-3