WorksheetsLimiting Factors to Primary Productivity
Total questions: 10
Worksheet time: 5mins
What controls primary production in aquatic ecosystems?
Light
Nutrients
Temperature
Moisture/Water
What is a limiting nutrient that should be added to increase production?
Nitrogen
Phosphorus
Carbon
Oxygen
What happens to surface waters in terms of nutrient availability?
Nutrient rich
Nutrient poor
Balanced
Eutrophication
What is the relationship between temperature and NPP?
Directly increases
Decreases
No effect
Increases then decreases
What is the essential resource for photosynthesis?
Light
Water
Soil
Air
What are the other limiting factors in terrestrial ecosystems?
Light
Soil texture
Growing season
All of the above
What is the term for the transfer of food energy through a series of organisms?
Food web
Food chain
Energy cycle
Trophic level
What is the percentage of energy stored in assimilated food used for growth?
10%
20%
30%
40%
What does trophic efficiency refer to?
Energy loss
Production transfer
Food chain length
Ecosystem balance
What does an energy pyramid represent?
Energy loss
Net production
Biomass
Trophic levels
