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NSEB topic read · 4 min

Read Innate Behaviour and Sign Stimuli

A focused NSEB read for the innate behaviour and sign stimuli pattern. Learn the linked concept, then apply it in the source questions.

NSEB · Animal Behaviour · 2 linked questions · 100% coverage
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Living-system questions are solved by matching a structure or organism to its function, process and stated condition.

Structure · The part being namedFunction · What that part doesCondition · The situation that changes the answer
Study deeper: NCERT Biology · Animal Behaviour

Innate Behaviour

Fixed action pattern resists learning changes. A behaviour that is innate, stereotyped and expressed without learning is a fixed action pattern. Such sequences are typically triggered by a sign stimulus and, once initiated, proceed in a highly stereotyped manner.

Innate Behaviour

Red cue releases territorial attack in sticklebacks. The red belly of a male stickleback acts as a sign stimulus that releases a stereotyped aggressive response. A comparable example is a chick opening its gape in response to a parental feeding cue. This is an innate stimulus-response pattern rather than learned conditioning.

OlympIQ exam lens

  • ✓Fixed action pattern resists learning changes
  • ✓Red cue releases territorial attack in sticklebacks
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