Biology- Ecosystems

Decomposer organisms break down dead organisms, providing energy to carnivores

• true

• false

Tags

NGSS.MS-LS2-3

What is composed of several food chains in an ecosystem that intersect and depend on one another?

• niche

• feeding level

• energy pyramid

• food web

Tags

NGSS.MS-LS2-3

What is the ultimate source of energy in any food chain?

• the sun

• producers

• consumers

• decomposers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which organisms can be found at the first, or lowest, trophic level?

• herbivores

• carnivores

• heterotrophs

• autotrophs

Herbivores eat only meat.

• true

• false

Food flows along a food chain from consumers to producers to decomposers.

• true

• false

Tags

NGSS.MS-LS2-3

Which statement describes an autotroph?

• It is an organism that makes its own food.

• It is an organism that eats other organisms.

• It is an organism that eats decaying matter.

• None of the above.

Which situation is a biotic factor operating within an ecosystem?

• the kind of climate in a given region

• carnivores that eat other animals

• the concentration of hydrogen gas in the air

• the rate of water flow in a body of water

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

Weather (such as rain) and soil conditions are considered to be part of the ____________ factors of an ecosystem.

• biotic

• antibiotic

• abiotic

• biomass

Tags

NGSS.MS-LS2-3

All the nonliving things in an environment are called the ________ factors.

• abiotic

• biotic

• ecological

• inorganic

Tags

NGSS.MS-LS2-3