Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 8160
TLS Online TPP Program

#Question id: 11378

Which of the following set of conditions will qualify a species to be considered as critical endangered (EN) as per IUCN criteria?

#Unit 10. Ecological Principles

  1. >90% reduction in population size, <100 km2 area of occupancy, at least 50% estimated extinction risk in three generations.

  2. <2,50 individuals with declining population, <250 mature individuals, at least 20% estimated extinction risk in 20 years

  3. <250 individuals with declining population, <50 mature individuals, at least 50% estimated extinction risk in 10 years.
  4. >90% reduction in population size, <10 km² area of occupancy, at least 50% estimated extinction risk in five generations
More Questions
TLS Online TPP Program

#Question id: 15724

#Unit 11. Evolution and Behavior

Neo-Lamarckism includes several theories based on the old idea of inheritance of modifications acquired during an organism’s lifetime. In a famous experiment done by,
TLS Online TPP Program

#Question id: 8963

#Unit 9. Diversity of Life Forms

What kind of data should probably have the greatest impact on animal taxonomy in the coming decades?
TLS Online TPP Program

#Question id: 607

#Unit 1. Molecules and their Interaction Relevant to Biology

In E. coli ________ is an activator and ________ is a negative allosteric modulator of the enzyme phosphofructokinase-1. 
TLS Online TPP Program

#Question id: 10620

#Unit 10. Ecological Principles

Above graph represent population size (N) versus time (t) for logistic growth features S-shaped curve sigmoid growth having following feature, which of the following is correct statement?



TLS Online TPP Program

#Question id: 5296

#Unit 8. Inheritance Biology

A transformation experiment is performed with a donor strain that is resistant to four drugs: A, B, C, and D. The recipient is sensitive to all four drugs. The treated recipient cell population is divided up and plated on media containing various combinations of the drugs. The table below shows the results. What is the probable order of the three tightly linked genes?