TLS Online TPP Program

#Question id: 16900


Which of the following is a valid conclusion from this finding?

#Section 3: Mathematics and Quantitative Ecology
  1.  Something in tomato products causes lower risk of prostate cancer.
  2. Based on this study, the relative risk of prostate cancer, for those who do not consume tomato products regularly compared with those who do, is greater than one.
  3. If a new observational study were to be done using the same sample size and measuring the same variables, it would find the same relationship.
  4. Prostate cancer can be prevented by eating the right diet
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TLS Online TPP Program

#Question id: 10653

#Section 1: Ecology

All offspring are produced in a single reproductive event, we term this pattern semelparity. Which of the following is characteristics feature for semelparity individuals?

a) Semelparity is common in insects and other invertebrates

b) Semelparous organisms may live for many years before reproducing

c) semelparity occur only in plant

d) In semelparity, exploitation competition is more common than interference competition

TLS Online TPP Program

#Question id: 10654

#Section 1: Ecology

Complete the following hypothetical life table for a bird

 

What will be population size in next generation?

TLS Online TPP Program

#Question id: 10655

#Section 1: Ecology

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

A) Unstable environments with unlimited resources favor r-selected populations.

B) K-selected populations are most often found in environments where density-independent factors are important regulators of population size.

C) Most populations have both r- and K-selected characteristics that vary under different environmental conditions.

D) The reproductive efforts of r-selected populations are directed at producing just a few offspring with good competitive abilities.

TLS Online TPP Program

#Question id: 10658

#Section 1: Ecology

The accompanying figure shows population growth pattern for two species in the same habitat


Which of the following conclusions hold true?

TLS Online TPP Program

#Question id: 10660

#Section 1: Ecology

Given below are growth equations where dN/dt is defined as

A.  rN

B. rN[(K-N)/N]

With reference to the above equations, which one of the following statements is incorrect?

TLS Online TPP Program

#Question id: 10661

#Section 1: Ecology

Semelparous species are those that produce all of their offspring in a single reproductive event. The survivorship curve of a population of a semelparous species would most likely resemble which of the following?