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TLS Online TPP Program

#Question id: 11353

Prior to the availability of a measles vaccine, outbreaks of measles occurred at two-year intervals, why?

#Section 1: Ecology
  1. Measles outbreaks occurred during hard winters, which happen every other year
  2. Two years were required for accumulation of enough susceptible infants
  3. Immunity to measles wore off in about two years
  4. Two years were required for the measles virus to disperse from tropical sources
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TLS Online TPP Program

#Question id: 3375

#Section 2: Evolution


Evolutionary force

Caused

A

Mutation

i

Increase genetic variation within population 

B

Genetic Drift

ii

Decrease genetic variation within population 

C

Migration 

iii

Decrease genetic variation between  population 

iv

Increase genetic variation between population 

Which of the following combination is correct?
TLS Online TPP Program

#Question id: 10632

#Section 2: Evolution

Three different population growth pattern related to population density are shown in figure
TLS Online TPP Program

#Question id: 8910

#Section 2: Evolution

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition
TLS Online TPP Program

#Question id: 10853

#Section 1: Ecology

Plant parasites that lack chlorophyll and depend on their host for sustenance are referred to as
TLS Online TPP Program

#Question id: 10610

#Section 2: Evolution

Among the following which statement is false about r-selected species?