NPP
Limiting Factors
Primary Production Facts
10% Rule
?
100

What does NPP stand for

Net primary production

100

What is one limiting factor for primary production in an aquatic system

Light or nutrients

100

During photosynthesis, ____ energy is converted into _____ energy

light, chemical

100

What is the percentage of energy that is transferred from trophic level to the next

10%

100

What were we measuring in the mini lab about NPP, GPP, and primary production?

dissolved 02

200

What does GPP stand for

Gross primary production

200

What is one limiting factor for primary production in a terrestrial system

Temperature, water, or nutrients

200

2 most productive biomes

Trop rainforest, estuaries, or coral reef

200

An easy way to get 10% of a number

Move the decimal over/Slash the last number
200

What is a constant?

Variables kept the same

300

What does R stand for

Respiration

300

Free 300 points for the person/team that picked this box!

LOL!

300

2 least productive biomes

open ocean, tundra, desert

300

Why do we only get 10% passed down trophic levels?

Energy is not transferred from one object/organism to the next with 100% efficiency. The other 90% is used by the organism to carry out its life processes or it is lost to the environment.

300
Does our ecosystem have high primary productivity? Why?

Answer will vary

400

What is the equation for NPP?

NPP = GPP - R

400

Nutrients is a limiting factor for BOTH aquatic and terrestrial biomes? T/F

True

400

Primary production is the result of ____________

photosynthesis

400

Do decomposers also get 10% of the food they eat? T/F

True

400

The physics law that states not all energy is transferrable with 100% efficiency

2nd Law of Thermodynamics

500

State the difference between gross and net

Gross is total amount and net is left over

500

What is one limiting factor for secondary production?

Primary production, 2nd Law of Thermodynamics, water, nutrients, predation, or competition

500

Board question!

Dark green spots on the picture

500

What is 10% of 1,000,000 J?

100,000 J

500

On the chalk board, write a 3 organism food chain

Answer will vary

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