Energy Flow Dynamics in Ecosystems

What happens in a trophic cascade when a keystone species is removed?

• The ecosystem becomes more stable

• New species quickly fill the gap

• The ecosystem may collapse

• There is no significant change in the ecosystem

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the primary source of energy for all ecosystems?

• Sunlight

• Water

• Soil nutrients

• Atmospheric gases

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organisms are capable of converting inorganic carbon into organic compounds?

• All animals

• Producers

• Carnivores

• Detritivores

Tags

NGSS.MS-LS1-6

Which of the following is not a type of consumer?

• Omnivore

• Autotroph

• Carnivore

• Herbivore

What type of consumer is a human who follows a vegetarian diet?

• Omnivore

• Herbivore

• Detritivore

• Carnivore

What role do detritivores play in an ecosystem?

• They produce organic compounds

• They break down dead organic matter

• They consume other animals

• They capture sunlight for energy

Tags

NGSS.MS-LS2-3

In a food chain, what is the direction of energy transfer?

• None of the above

• Between secondary consumers

• From producers to primary consumers

• From primary consumers to producers

Tags

NGSS.MS-LS2-3

What percentage of energy is typically transferred from primary to secondary consumers?

• 10%

• 75%

• 25%

• 50%

Tags

NGSS.MS-LS2-3

Which species' removal led to the destruction of kelp forests off the coast of Alaska?

• Whales

• Sea lions

• Sharks

• Sea otters

Tags

NGSS.MS-LS2-4

Which of the following best describes an apex predator?

• An animal that can photosynthesize

• An animal that is preyed upon by most other animals

• An animal that has no natural predators

• An animal that only eats plants