Unit 6: Ecosystem Dynamics

What do you call of the position of an organism in each level of a food chain?

• pyramid

• ecosystem dynamics

• trophic level

• food chain

What is used to describe a competition between two different species?

• Interspecific

• tertiary consumer

• Intraspecific

• secondary consumer

Tags

NGSS.MS-LS2-2

How much energy is transferred from one trophic level to another?

• 100%

• 50%

• 30%

• 10%

Tags

NGSS.MS-LS2-3

The transferring of energy in the form of food is called ________.

• trophic level

• prey

• food chain

• predator

Tags

NGSS.MS-LS2-3

The total number of organism at each trophic level in the food chain is known as _____.

• efficiency

• pyramid of numbers

• food web

• biomass

It is the interconnection of food chains and represents of what eats what in an ecological community.

• food pyramid

• food chain

• food transfer

• food web

Tags

NGSS.MS-LS2-3

In calculating the efficiency of biomass transfer from one trophic level to another we need to follow this equation.

• efficiency equals biomass transferred to the next level multiply to biomass that was available at the previous level divided by 100

• efficiency equals biomass transferred to the next level less to the biomass that was available at the previous level multiply by 100

• efficiency equals biomass transferred to the next level divided by the biomass that was available at the previous level divided by 100

• efficiency equals biomass transferred to the next level divided by the biomass that was available at the previous level multiply by 100

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Identify the efficiency between the snail (ex. 1000 J) & frog (ex. 100J)

• 10.5 %

• 20 %

• 10 %

• 20.5 %

Tags

NGSS.MS-LS2-3

NGSS.MS-PS3-5

A type of nutrition where organisms get their nutrients from dead organic matter is called ________.

How many food chains are there in this food web?

• 6

• 7

• 8

• 9

Tags

NGSS.MS-LS2-3