TLS Online TPP Program

#Question id: 12573


Which of the following conditions is the most likely indicator of a population in an extinction vortex? 

#Section 5: Applied Ecology & Evolution
  1. The population is geographically divided into smaller populations.
  2. The species is found only in small pockets of its former range
  3. The effective population size of the species falls below 500.
  4. Genetic measurements indicate a continuing loss of genetic variation.
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TLS Online TPP Program

#Question id: 10598

#Section 2: Evolution

In a wild life reserve, we have two species of mammal. Species A reproduce thrice a year and produced 6-10 offspring per litter. Species B reproduce once in 2-3 year and produced 1-2 offspring during each cycle of reproduction. Which of the following statement is true?

TLS Online TPP Program

#Question id: 10599

#Section 2: Evolution

In a type I survivorship curve characterized by:

TLS Online TPP Program

#Question id: 10600

#Section 2: Evolution

Which of the following is not feature of Type II survivorship curve?

TLS Online TPP Program

#Question id: 10601

#Section 2: Evolution

following some statement are given about Grime’s triangle that is alternative to r and K selection is correct?

A. Ruderals are adapted to take advantage of habitat disturbance, but these are less competitor 

B. Any species cannot be a good stress tolerator and a good competitor at the same time

C. Mangroves and lichens are good stress tolerant and also good adopted to disturbance

D. Many perennial herbs are good adapted to habitat disturbance, but these are less competitor 

Which one of the following options represents a combination of correct statements?

TLS Online TPP Program

#Question id: 10602

#Section 2: Evolution

What are size of female population of butterfly (Breed once and one year life span ) after two year ?

Nt = 20 (initial population ) Nt+2 =?

Ro=1.5 number of female produced per female per generation

TLS Online TPP Program

#Question id: 10603

#Section 2: Evolution

The population size of a bird increased from 600 to 700 in one year. If the per capita birth rate of this population is 0.50, what is its per capita death rate?