TLS Online TPP Program

#Question id: 15604


The bacteria which cause septicaemia are fast becoming resistant to the antibiotics used for controlling them. Which one of the following explanations fits best?

#Unit 12. Applied Biology
  1. Each and every individual bacterium, in order to survive, develops a resistance to the antibiotic when exposed to it, and passes that resistance on to future generations.
  2. Only some bacteria, in order to survive, develop a resistance to the antibiotic when exposed to it, and pass that resistance on to future generations.
  3. A few bacteria have a natural heritable resistance to the antibiotic, so they survive when exposed to it, and pass that resistance on to future generations.
  4. All the bacteria have a natural heritable resistance to the antibiotic, so they survive when exposed to it, and pass that resistance on to future generations
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TLS Online TPP Program

#Question id: 10626

#Unit 10. Ecological Principles

Following is a hypothetical life table of species.


Following some statement is given

A- Proportional of survive is constant over different age group

B- Greater mortality in young age

C. Follow type II survivorship curve

D. Follow type III survivorship curve

Which of the following above statement is correct?

TLS Online TPP Program

#Question id: 10627

#Unit 10. Ecological Principles

Following graph represent mortality rate of population of species A, B and C with their respective Age


There are following organism are correct

TLS Online TPP Program

#Question id: 10628

#Unit 10. Ecological Principles

Which of following statement is correct for above population?


TLS Online TPP Program

#Question id: 10629

#Unit 10. Ecological Principles

Following are density dependent factors

A- Food                            B- space

Which of the following animal and their most important density dependent limiting factor are correct?

TLS Online TPP Program

#Question id: 10630

#Unit 10. Ecological Principles

Following is relation between population size with various strategies of species, following is correct figure? 


TLS Online TPP Program

#Question id: 10631

#Unit 10. Ecological Principles

To estimate the number of foxes m an area, a researcher conducted a mark-recapture survey. In the fast survey, he caught and marked 90 foxes. In his second survey a week later, he caught 120 foxes of which 40 were marked (recaptures). If you are told that the actual number of foxes in this area is 400, which of the following is a plausible explanation for the anomaly in the researcher's data?