U3C3 Vocabulary

What is the role of a producer in an ecosystem?

• Gets energy/nutrients from very dead matter

• Gets energy from living or once-living sources

• Gets energy from nonliving sources like the sun

• Gets energy from eating meat

Answer explanation

Producers in an ecosystem obtain energy from nonliving sources like the sun.

What is the role of a consumer in an ecosystem?

• Gets energy from nonliving sources like the sun

• Gets energy/nutrients from very dead matter

• Gets energy from living or once-living sources

Answer explanation

A consumer in an ecosystem obtains energy from living or once-living sources, distinguishing it from other choices.

What is the role of a detritivore in an ecosystem?

• Gets energy from nonliving sources like the sun

• Gets energy from living or once-living sources

• Gets energy from eating meat

• Gets energy/nutrients from very dead matter

Answer explanation

Detritivores play a crucial role in ecosystems by obtaining energy and nutrients from decomposing organic matter.

What is the role of a carnivore in an ecosystem?

• Gets energy from nonliving sources like the sun

• Gets energy from living or once-living sources

• Gets energy/nutrients from dead matter

• Gets energy from eating meat

Answer explanation

A carnivore gets energy from eating meat, which is its role in an ecosystem.

What is the role of an omnivore in an ecosystem?

• Gets energy from eating meat and vegetation

• Gets energy from living or once-living sources

• Gets energy from nonliving sources like the sun

• Gets energy/nutrients from dead matter

Answer explanation

An omnivore gets energy from eating both meat and vegetation, making it a crucial part of the ecosystem.

What is the role of a herbivore in an ecosystem?

• Gets energy from eating vegetation

• Gets energy/nutrients from dead matter

• Gets energy from nonliving sources like the sun

• Gets energy from living or once-living sources

Answer explanation

A herbivore in an ecosystem obtains energy by consuming vegetation.

What does the 'Rule of 10' state in an energy pyramid?

• Only 10% of the energy available gets passed on to each subsequent level

• Only 20% of the energy available gets passed on to each subsequent level

• Only 50% of the energy available gets passed on to each subsequent level

• Only 90% of the energy available gets passed on to each subsequent level

Answer explanation

The 'Rule of 10' states that only 10% of the energy available gets passed on to each subsequent level in an energy pyramid.

What is the definition of chemosynthesis?

• The process by which organisms consume meat for energy

• The process by which organisms break down dead matter for energy

• The process by which organisms convert chemicals into energy

• The process by which organisms convert sunlight into chemical energy

Answer explanation

Chemosynthesis is the process by which organisms convert chemicals into energy.

What is the definition of photosynthesis?

• The process by which organisms break down dead matter for energy

• The process by which organisms consume meat for energy

• The process by which organisms convert inorganic compounds into energy

• The process by which organisms convert sunlight into chemical energy

Answer explanation

Photosynthesis is the process by which organisms convert sunlight into chemical energy.

What is the main source of energy for a producer?

• Meat

• Nonliving sources like the sun

• Living or once-living sources

• Dead matter

Answer explanation

The main source of energy for a producer is nonliving sources like the sun.