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 […]
Tag: CSIR NET Life Science Previous Year Questions and Solution on Brain
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CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Optimal Foraging Theory: How Predators Choose Between High-Value and Low-Value Prey
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
How Predator Type Shapes Guppy Life History: What Happens When Guppies Move from Pike Cichlid to Killer Fish Habitats?
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
How Learning and Social Cues Shape Tadpole Escape Responses to Predators
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
How Frequency Tuning in Grasshopper Females Drives Reproductive Isolation
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Divergence in Cricket Call Frequencies Across a River: Signals of Speciation and Reproductive Isolation
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
When Does a Behavioral Variant Reach Fixation? Understanding Fitness and Frequency in Population Genetics
A particular behavioural variant affects fitness of an organism. The relationship between the frequency of the variant in the population and fitness are plotted below. In which of these cases […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Understanding Infant Responses: The Role of Sign Stimulus in Early Sensory Development
A 20-week old infant was exposed to the following stimuli and the responses were measured. Based on the response patterns shown above to the given stimuli, select the correct theory […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Dawn Chorus in Birds: Debunking Myths and Understanding the True Reasons Behind Early Morning Song
Many species of birds call at dawn in temperate regions. The phenomenon is referred to as “Dawn Chorus”. Several explanations have been proposed for this. Which one of the options […]
CSIR NET Life Science Previous Year Questions and Solution on Brain, Behavior and Evolution
Acoustic Adaptation Hypothesis: Why Forest Birds Sing Low and Narrow
If bird song is selected to maximize broadcast range and minimize degradation, then according to the “Acoustic Adaptation Hypothesis” which of the following combination of features is likely to be […]
