Unit 5: Ecology

Biotic factors are ___, while abiotic factors are ___.

• nonliving, living

• living, nonliving

• important, not important

• not important, important

How is an ecosystem different from a community?

• Ecosystems are populations + abiotic factors

• Ecosystems are just populations

• Ecosystems are just abiotic factors

• Ecosystems have to belong to a certain biome

Select all of the defining factors of a biome.

• water quality

• ecosystem size

• soil type

• climate

What is the main energy source for all food chains?

• water

• producers

• the sun

• consumers

What is the first trophic level called?

• producers

• primary consumers

• secondary consumers

• apex predator

What trophic level is usually considered separate from the food chain/web?

• producer

• apex predator

• decomposer

• consumer

How much energy is transferred from one trophic level to the next?

• 5%

• 10%

• 15%

• 20%

Tags

NGSS.MS-LS2-3

Where does most of the energy in a food chain go?

• It gets stored as biomass

• It is used by the organism immediately

• The next trophic level

• It leaves as heat

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Select all of the options that MUST be included in a food chain.

• sun

• producer

• primary consumer

• decomposer

Tags

NGSS.MS-LS2-3

What direction do the arrows point in a food chain?

• The arrow points to the organism doing the eating

• The arrow points to the organism being eaten