Ecology part 1

Which example best illustrates the definition of a community?

• All the blue whales in the world.

• A herd of bison living in Yellowstone Park.

• The temperate grassland ecosystem in the American midwest.

• A tropical reef aquarium with many different types of fish and corals.

All the elephants living in a wildlife preserve would be considered a

• community

• group

• individual

• population

A nonliving element in an ecosystem is an 

• animal
• abiotic factor
• biotic factor
• organism

Which of the following is not an abiotic factor?

• sun
• temperature
• soil
• grass

A consumer that eats only animals.

• herbivore

• omnivore

• carnivore

• decomposer

Organisms that break down the dead remains of other organisms, & return nutrients to the soil.

• decomposers

• primary consumers

• producers

• secondary consumers

Organisms that use sunlight to make their own food are

• autotrophs

• heterotrophs

• consumers

• decomposers

Overlapping food chains in an ecosystem make up....

• food web
• food chain
• niche
• symbiosis

Tags

NGSS.MS-LS2-3

In this energy pyramid, which organisms have the most energy available?

• Producers
• Carnivores
• Herbivores
• Top Predator

Tags

NGSS.MS-LS2-3

How much of the energy in each level of a ecological pyramid gets lost as heat or used by the organism so that it cannot be passed on to the next trophic level?

• 80%
• 90%
• 10%
• 20%

Tags

NGSS.MS-LS2-3