DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that

#Question id: 11293

#Unit 10. Ecological Principles

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

#Unit 10. Ecological Principles

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

#Unit 10. Ecological Principles

The amount of energy entering a food chain depends on the

#Question id: 11296

#Unit 10. Ecological Principles

Which of the following statements is true?

#Question id: 11297

#Unit 10. Ecological Principles

What is the difference between gross and net primary production?

#Question id: 11298

#Unit 10. Ecological Principles

A pyramid of numbers shows _____________.