Fixed action pattern (FAP) is stereotype behavior that is triggered by an external sensory stimulus as:
Correct answer: C. Sign stimulus
- A. Response chain
- B. Endogenous releaser
- C. Sign stimulus
- D. All (A), (B) and (C)
Explanation
The selective responses to stimuli suggested that there must be some built-in mechanism by which sign stimuli were recognized. This mechanism came to be called the innate releasing mechanism (IRM). The important aspect of this concept is that the mechanism is envisaged as being innate, that is, both the recognition of the sign stimulus and the resulting response to it are inborn and characteristic of the species.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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