Ecosystems

Question 1

What percent of total incoming solar energy is captured by photosynthesis?

Answer 1

Around 1%

Question 2

What percentage of GPP is used in cellular respiration or lost as heat?

Answer 2

55%

Question 3

What percent of GPP is used to create new biomass? Also referred to as net primary productivity.

Answer 3

40%

Question 4

How does energy flow through a ecosystem?

Answer 4

Trophic structure

Question 5

What does a food web illustrate?

Answer 5

It shows the sources of energy for different organisms

Question 6

What is the source of all energy?

Answer 6

Primary producers

Question 7

What is the rule for pyramid of productivity?

Answer 7

10% rule

Question 8

What is biomagnification?

Answer 8

Toxic substance that become in higher concentrations at higher trophic levels

Question 9

What ecosystems have a high NPP?

Answer 9

Tropical forests, wetlands, coral reefs

Question 10

What ecosystems have a low NPP?

Answer 10

Rock, desert, open ocean, tundra

Question 11

What are some limits to NPP?

Answer 11

Limits to photosynthesis, water, temperature, light, nutrients

Question 12

What controls cycling rates?

Answer 12

Decomposers