Food chains are sometimes short because -triyambak.org

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TLS Online TPP Program

#Question id: 12287

Food chains are sometimes short because

#Section 1: Ecology

Only a single species of herbivore feeds on each plant species.
Local extinction of a species causes extinction of the other species in its food chain
Most of the energy in a trophic level is lost as it passes to the next higher level.
Predator species tend to be less diverse and less abundant than prey species.

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TLS Online TPP Program

#Question id: 10678

#Section 2: Evolution

In competitive species N1 and N2, four individuals of N2 use the same resource as one individuals of N1. According conversion factor, what is the value of per capita competitive effect of N2 on N1(α) and per capita effect of N1 on N2 ( β) respectively?

TLS Online TPP Program

#Question id: 3250

#Section 2: Evolution

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1, A1A2 and A2A2 genotype is 0.01, 0.18 and 0.81) Which of the following statement is correct?

TLS Online TPP Program

#Question id: 10248

#Section 4: Behavioural Ecology

Factors involved in an animal’s foraging "strategy" are

TLS Online TPP Program

#Question id: 3377

#Section 2: Evolution

To call a behavior altruistic, an evolutionary biologist will have to demonstrate that

A) These behavior is decrease the individual fitness of the donor and increases the individual fitness of the recipient

B) These behavior is increases the individual fitness of both the donor and the recipient

C) Overall increase the inclusive fitness of the population

D) These behavior depend on genetic relation