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TLS Online TPP Program

#Question id: 10574

Which of the following statements about the evolution of life histories is correct?

#Applied Microbiology
  1. Stable environments with limited resources favor r-selected populations.
  2. K-selected populations are most often found in environments where density-independent factors are important regulators of population size.
  3. Most populations have both r- and K-selected characteristics that vary under different environmental conditions.
  4. The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities
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TLS Online TPP Program

#Question id: 37870

#Plant Biotechnology

Given below are two statements:
Statement I: The replacement volume in an open continuous culture is adjusted to keep the culture at submaximal growth indefinitely.
Statement II: Continuous culture systems maintain a steady state by replacing a portion of spent medium with fresh medium.

In the light of the above statements, choose the most appropriate answer from the options given below:
TLS Online TPP Program

#Question id: 37871

#Plant Biotechnology

Given below are two statements:
Statement I: Open continuous cultures involve the removal of equal volumes of cells and used medium which is replaced by fresh medium.
Statement II: In closed continuous cultures, the cell population remains static (constant) because cells are constantly removed.

In the light of the above statements, choose the most appropriate answer from the options given below:
TLS Online TPP Program

#Question id: 37872

#Plant Biotechnology

Given below are two statements:
Statement I: In a closed continuous culture, cells are separated from the removed medium and returned to the vessel, causing the cell biomass to increase.
Statement II: In an open continuous culture, only the used medium is removed while the cells are retained to maintain submaximal growth.

In the light of the above statements, choose the most appropriate answer from the options given below:
TLS Online TPP Program

#Question id: 37873

#Plant Biotechnology

Open culture systems in plant and microbial cell culture are typically of which types?
TLS Online TPP Program

#Question id: 37874

#Plant Biotechnology

In a turbidostat, the culture is maintained at:
TLS Online TPP Program

#Question id: 37875

#Plant Biotechnology

The main feature of a chemostat is: