List of top Questions asked in GATE Ecology and Evolution

Rising temperature due to global warming can stimulate decomposition of organic matter and release CO\(_2\) into the atmosphere. This is an example of
Ant-mimic spiders of the genus Myrmarachne are known for which one of the following evolutionary phenomena?
Grazing by large mammalian herbivores can have a strong influence on ecosystem structure, and can cause ecosystems to transition between alternative states over decades. Which one of the following transitions can result from grazing?
The effective population size of a sexually reproducing, diploid, animal species will be highest when the sex ratio (number of reproducing males / number of reproducing females) is
The theory of evolution by natural selection was proposed by which one (or more) of the following?
Which one of the following mammalian DNA regions exhibits the highest level of sequence variation?
Which one of the following makes a species most vulnerable to extinction?
Two sister species of bulbuls have non-overlapping distributions. One is distributed in India and the other in Sri Lanka. Which of the following modes of speciation is the most parsimonious explanation for this pattern?
In an Arctic Ocean food chain, killer whales feed on sea otters, which feed on sea urchins, which in turn feed on kelp (a type of seaweed). An increase in the abundance of killer whales causes sea otter abundance to decline, leading to higher sea urchin densities, which in turn reduces the abundance of kelp. Which of the following terms describes this phenomenon?
Listed below are hypotheses for the evolution of monogamy. Which one of these is NOT based on the concept of individual selection?
Of the following, which one is the most direct measure of Darwinian fitness?
The marginal value theorem in optimal foraging theory examines which one of the following foraging decisions?
Which one of the following shows the highest degree of endemism?
Which one of the following Mendelian disorders is influenced by diet?
Animal species can vary in whether dispersal is more likely among male offspring (male-biased), female offspring (female-biased), or similar between the sexes. Dispersal in birds and mammals is most commonly: