Understanding Food Webs and Energy Transfer

What is the role of a producer in an ecosystem?

• To consume other organisms for energy

• To produce their own food through photosynthesis

• To break down dead matter

• To transfer energy between trophic levels

Tags

NGSS.MS-LS2-3

Which of the following best describes a consumer?

• An organism that makes its own food

• An organism that feeds on other organisms

• An organism that decomposes organic material

• An organism that lives in the soil

What is the primary function of decomposers in an ecosystem?

• To produce energy

• To convert sunlight into food

• To break down dead organisms and return nutrients to the soil

• To consume primary consumers

Tags

NGSS.MS-LS2-3

What does the term "trophic level" refer to?

• The number of organisms in a food web

• The position an organism occupies in a food chain

• The amount of energy produced in an ecosystem

• The type of consumer an organism is

Tags

NGSS.MS-LS2-2

An energy pyramid illustrates:

• The number of organisms at each trophic level

• The energy available at each trophic level

• The food chain in an ecosystem

• The types of producers in a habitat

Tags

NGSS.MS-LS2-3

Which of the following is a primary consumer?

• A lion

• A rabbit

• A mushroom

• A tree

Tags

NGSS.MS-LS2-2

A secondary consumer typically eats:

• Only plants

• Only other consumers

• Primary consumers

• Decomposers

Which type of consumer is known as a tertiary consumer?

• An herbivore

• A carnivore that eats secondary consumers

• A producer

• A detritivore

A food chain is best described as:

• A complex network of interactions among species

• A linear sequence of organisms that transfer energy

• A description of energy loss in an ecosystem

• A diagram that shows only producers

Tags

NGSS.MS-LS2-3

Photosynthesis is the process by which:

• Animals convert food into energy

• Plants use sunlight to make food

• Decomposers break down organic matter

• Energy is transferred between trophic levels

Tags

NGSS.MS-LS1-6