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The correct expression of Hamilton rule for the evaluation of altruism is [C = the cost of a behavioral act to the actor, b = the benefit of that act […]

Natural selection is primarily based on fitness, which is dependent on maximum number of offspring laid for next generation. But at present new evolutionary concept is added in animal behaviour […]

An individual’s ability to pass down their genes—both through their offspring and the offspring of close relatives with shared genes. This is termed as (1) Inclusive fitness (2) Darwinian fitness […]

A researcher intends to stimulate neurons via glutamate receptors in medial septum of an experimental animal. The following apparatus/ instruments are available in the laboratory: A. Stereotaxic apparatus B. Slow […]

The behavior of a leopard killing an antelope or a deer grazing on spring grass for food is referred to as (1) competition (2) interaction (3) predation (4) mutualism   […]

Consider a predator species foraging for prey in a habitat, where there are two prey species A and B. Assume the foraging predator can choose from a high-value prey A […]

In habitat ‘A’ pike cichlid fishes preferentially feeds on large adult guppies, while in habitat ‘B’ killer fish feeds on small, juvenile guppies. What will be effect if experimentally guppies […]

A study tested the importance of learning mechanisms in the development of antipredator escape responses in tadpoles of a frog species. Tadpoles hatched from eggs in the lab were kept […]

Males of a species of grasshopper produce loud calls to attract females. Most energy of these calls lie in the species-specific frequency, while other frequencies have much less energy. This […]

A researcher studying a cricket species finds that individuals on either side of a large river have different call-frequencies on average. The following statements were made: A. The different call […]