Ames Test is used to measure carcinogenicity and mutagenicity of any chemical mutagen.

TLS Online TPP Program

#Id: 5946

#Unit 10. Ecological Principles

Deserts are not very efficient at converting huge amounts of incident energy from sunlight into plant biomass.  Most ecosystems based on phytoplankton have very low efficiencies, usually less than 0.5%.

Photosynthetic efficiency of an ecosystem as a whole varies between 1% and 2%.

TLS Online TPP Program

#Id: 5947

#Unit 10. Ecological Principles

TLS Online TPP Program

#Id: 5948

#Unit 10. Ecological Principles

Efficiency of Energy transfer The efficiency of energy transfer is influenced by the established laws of thermodynamics.

Efficiency of consumers as energy transformers is trophic-level transfer efficiency

TLS Online TPP Program

#Id: 5949

#Unit 10. Ecological Principles

Trophic-level transfer efficiency

 

TLS Online TPP Program

#Id: 5950

#Unit 10. Ecological Principles

Trophic-level transfer efficiency is low for the two reasons

a- Many organisms cannot digest all their prey.  

b- Much of the energy assimilated by animals is used in maintenance.

c- The dead organisms and feces become dinner for decomposers.

TLS Online TPP Program

#Id: 5951

#Unit 10. Ecological Principles

Consumption efficiency 

Consumption efficiency is the proportion of production at one trophic level (Prod n -1) that is eaten by, or ingested, by the next trophic level (In)