4.2 Energy Flow

Question 1

What are food chains?

Answer 1

Food chains show the flow of energy throught the trophic levels of a feeding relationship.

Question 2

How much energy is passed onto the next trophic level?

Answer 2

10%

Question 3

What is a trophic level?

Answer 3

Feeding position of an organism in a food chain

Question 4

What are food webs?

Answer 4

Food webs show all of the feeding relationships within a habitat

Question 5

How is the flow of energy measured?

Answer 5

units of energy per unit area per unit time

Question 6

Energy Flow Equation

Answer 6

kJ m^-2 y^-1

Question 7

What is Net Production?

Answer 7

the amount of organic matter remaining after respiration

Question 8

What is Gross Production?

Answer 8

the total amount of organic matter produced in an ecosystem

Question 9

What is biomass

Answer 9

the total dry mass of organic matter in organisms or ecosystems

Question 10

How do you find Net Production?

Answer 10

NP = GP - R

(Net Production = Gross Production - Respiration)