TLS Online TPP Program

#Question id: 4627


Which of the following is not one of Charles Darwin's observations?

#Section 2: Evolution
  1. Individuals in a population vary in their traits.

  2. Many of the traits in an individual are heritable.

  3. A population avoids competition by producing only as many offspring as can successfully reproduce on their own.

  4. Species generally are adapted to their environments.

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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?