#Question id: 11292
#XL - R Botany
In an pond ecosystem the _____ is always greater than the _____ .
(a) number of primary producers . . . number of secondary consumers
(b) biomass of secondary consumers . . . biomass of primary consumer
(c) assimilation efficiency of primary consumers . . . assimilation efficiency of secondary consumers
(d) biomass of primary producers . . . biomass of primary consumers
#Question id: 11293
#XL - R Botany
Measurement of phytoplankton production, take sample of phytoplankton suspended in two bottles in lake. One bottle (D) is dark in colour but second bottle (L) light in colour. After some time productivity measure as follow Where Lo –oxygen concentration in light bottle, Do –oxygen concentration in Dark bottle, Io –oxygen concentration in bottle before incubation
A) Lo- Do B) Lo- Io C) Io- Do
#Question id: 11294
#XL - R Botany
A small lake has three trophic level – Phytoplankton(autotroph) , Zooplankton (herbivore ) and planktivorous fish ( primary carnivore) . In to this lake Population of some other primary carnivore introduced to study top down effect . What is expected long term consequence of this introduction ?
#Question id: 11295
#XL - R Botany
The amount of energy entering a food chain depends on the
#Question id: 11296
#XL - R Botany
Which of the following statements is true?
#Question id: 11297
#XL - R Botany
What is the difference between gross and net primary production?