Ecosystems

All life on Earth exists in a region known as 

• an ecosystem
• a biome
• the biosphere
• ecology

Groups of different species that live together in a defined area make up a(n)

• population
• community
• ecosystem
• biosphere

Autotrophs are organisms that

• rely on other organisms for their energy & food supply.
• consume plant & animal remains and other dead matter.
• use energy they take in from the environment to convert inorganic molecules to organic molecules.
• obtain energy by eating only plants.

The series of steps in which a large fish eats a small fish that has eaten algae is a 

• food web
• food chain
• biomass pyramid
• pyramid of numbers

Tags

NGSS.MS-LS2-3

Which of the following would be classified as a decomposer?

• a fox
• a cherry tree
• bacterium
• a blue jay

The total mass of living tissue at each trophic level can be shown in a(n)

• energy pyramid
• pyramid of numbers
• biomass pyramid
• biogeochemical cycle

Tags

NGSS.MS-LS2-3

A group of individuals belonging to a single species that live together in a defined area is termed a(n)

• population
• community
• ecosystem
• family

In addition to herbivores, another type of consumer is a(n)

• carnivore
• omnivore
• detritivore
• all of these

According to the biomass pyramid shown, which organism or group of organisms would have the most mass?

• Sparrowhawk
• Bluetit
• Catepillar
• Oak tree

According to the biomass pyramid shown, which organism would eat the catepillar

• producer
• primary consumer
• secondary consumer
• tertiary consumer