TLS Online TPP Program

#Question id: 8927


Arthropods invaded land about 100 million years before vertebrates did so. This most clearly implies that

#Section 2: Evolution
  1. arthropods have had more time to co-evolve with land plants than have vertebrates.
  2. extant terrestrial arthropods are better adapted to terrestrial life than are extant terrestrial vertebrates.
  3. ancestral arthropods must have been poorly adapted to aquatic life, thus experienced a selective pressure to invade land.
  4. vertebrates evolved from arthropods.
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TLS Online TPP Program

#Question id: 10632

#Section 1: Ecology

Three different population growth pattern related to population density are shown in figure

TLS Online TPP Program

#Question id: 10634

#Section 1: Ecology

Consider a population which is changing from one generation to the next as per the equation N(t) = R*N(t-1), where N(t) represents the size of the population at time t and R is a constant growth parameter. Under what condition is the population likely to go extinct?

TLS Online TPP Program

#Question id: 10635

#Section 1: Ecology

Three important biological parameters – generation time, per capita growth rate (r) and clutch size are a function of the organism‟s body size. Which of the curves (a) or (b) represents the correct relation of each of the parameters to body size?



TLS Online TPP Program

#Question id: 10640

#Section 1: Ecology

Given below is a graphical representation of plant life histories based on Grime's model in which disturbance and competition are the important factors


Which of the following options correctly represents A, B and C, respectively in the figure above?


TLS Online TPP Program

#Question id: 10642

#Section 1: Ecology

Which curve best describes survivorship in a songbirds and marine crustacean that molts respectively?

 


TLS Online TPP Program

#Question id: 10643

#Section 1: Ecology

Population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02) Estimate the number of individuals added to (or lost from) a population of 1,000 individuals in one year.