OpenSciEd 7.5

The arrows in a food chain or web represent ...

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show the direction the energy is flowing between organisms. 

• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Why is some energy not passed on to the next trophic level?

• The organisms at each level use about 90% of the available energy to live.

• The statement is NOT true. All energy IS passed from one trophic level to the next.

• The organisms at each level use about 10% of the available energy to live.

• Most energy is absorbed by the soil instead.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain organisms that can photosynthesize?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-6

Which organism(s) in the food web above can be described as quaternary consumers?

• owl and mosquito

• mouse only

• small bird and owl

• owl only 

Tags

NGSS.MS-LS2-3

If the small bird on trophic level 3 in the pyramid has 50 kcal of energy available, how many kcal of energy were present in the trees?

• 5

• 500

• 5000

• 0.5

Tags

NGSS.MS-LS2-3

What is indicated by the diagram?

• Food web

• Food chain

• Food map

• Food menu

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

What is the first source of energy for almost all food webs?

• Plants

• Sunlight

• Mineral in the soil

• Decomposers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which organisms in the diagram have the most energy to give to other organisms?

• Cattails and Marsh Grass

• Hawks and Snakes

• Crickets and Grasshoppers

• Shrews and Frogs

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

If additional snakes are introduced into this ecosystem, there will most likely be an immediate decrease in the _________.  

• hawk population

• rabbit population

• wildflower population

• grass population

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

NGSS.MS-LS2-1

If there are 47,802 calories (energy) available at the producer level of this food chain, how many calories would be available at the tertiary consumer level?

• 47.802

• 478.02

• 4.7802

• 0

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6