Q.86 Which one of the following describes the “innate behavior” of an animal?
(A) A behavior that is triggered due to the change in environment.
(B) A behavior that is trained by the parents.
(C) A behavior that is determined by heredity.
(D) A behavior that is learnt by “hit and trial” approach.

Innate behavior in animals is genetically determined and instinctive, occurring without learning or prior experience. This distinguishes it from learned behaviors shaped by environment or training. The correct answer to the question is option (C).

Option Analysis

Option (A) describes a stimulus-response reaction, common in many behaviors including innate ones like reflexes, but not definitive of “innate” since learned behaviors also respond to environmental changes.​
Option (B) refers to learned or imprinted behavior from parental teaching, such as song learning in birds, which contrasts with innate traits.​
Option (C) accurately defines innate behavior as hereditary, encoded in genes, species-specific, and performed identically by all individuals without practice, like spider web-building.​
Option (D) outlines trial-and-error learning, a form of acquired behavior modified by experience, not innate.​

Innate behavior of an animal refers to instinctive, genetically programmed responses that ensure survival without learning. These behaviors appear fully formed at birth or first stimulus exposure, vital for CSIR NET Life Sciences exams on animal behavior.​

Key Characteristics

• Heritable: Passed via genes, consistent across species members.​

• Stereotypic: Performed identically every time, inflexible to experience.​

• Intrinsic: Occurs in isolated individuals, no parental input needed.​
  Examples include spiderlings spinning webs or sea turtle hatchlings moving to water.​

Types of Innate Behaviors

• Reflexes: Knee-jerk or pupillary response.​

• Taxis/Kinesis: Directed/undirected movement to stimuli, like moths to light.​

• Fixed Action Patterns: Egg-retrieval in geese, triggered by sign stimuli.​

Innate vs. Learned Behaviors