#Question id: 11274
#Unit 10. Ecological Principles
Assimilation efficiency (AE) is the proportion of ingested energy assimilated in to blood stream but Production efficiency (PE) is the proportion of assimilated energy that is incorporated in to biomass. Following some statement is correct?
A. Assimilation efficiencies of aquatic herbivore is greater than terrestrial herbivore
B. Production efficiencies of higher tropic level are greater than lower tropic level
C. production efficiencies of vertebrate is less than invertebrate
D. Assimilation efficiencies of Carnivore are often greater than herbivore
#Question id: 11275
#Unit 10. Ecological Principles
Consumption efficiency is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level which of the following are correct statement ?
A.Consumption efficiencies higher in forests than grassland
B-In aquatic ecosystems consuption efficiencies of hervivore are greater than terrestrial hervivore
C- Consumption efficiencies for carnivores are typically higher than those of herbivores
D-Primary production consumption is increased where it is high in nutrients such as nitrogen and phosphorus
#Question id: 11276
#Unit 10. Ecological Principles
Following statement regarding efficiency at different tropic level for secondary production?
A-high production efficiency individual able to survive at little food
B-production efficiency decrease toward increase tropic level
C-aquatic herbivore is more efficient grazer than terrestrial grazer
D- Carnivore assimilation efficiency appear to average around 10%
Which above combination are correct?
#Question id: 11277
#Unit 10. Ecological Principles
If a species is a keystone predator, then its removal from a community should
(A) Increase population size of the predator’s preferred prey
(B) decrease species diversity in the prey community
(C) decrease productivity of the predator’s preferred prey
(D) increase species diversity in the prey community
#Question id: 11278
#Unit 10. Ecological Principles
Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?
A) Oligotrophic lakes are less subject to oxygen depletion.
B) Rates of photosynthesis are lower in eutrophic lakes.
C) Eutrophic lake water contains higher concentrations of nutrients.
D)Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.
#Question id: 11279
#Unit 10. Ecological Principles
Ecosystem A: Actual link 10, number of species 15
Ecosystem B: Actual link 10, number of species 20
Connectance of ecosystem A and B