Which class of signaling receptor is primarily responsible for detecting changes in temperature in animals?

• A. Thermoreceptors
• B. Photoreceptors
• C. Mechanoreceptors
• D. Chemoreceptors

Answer: (A)

Verified step by step guidance

1. Understand the question: The problem is asking about the class of signaling receptors responsible for detecting changes in temperature in animals. This requires knowledge of sensory biology and receptor types.
2. Review the receptor types: Thermoreceptors detect temperature changes, photoreceptors detect light, mechanoreceptors detect mechanical stimuli (like pressure or vibration), and chemoreceptors detect chemical stimuli (like taste or smell).
3. Focus on the key term 'temperature': Since the question specifically mentions temperature, identify which receptor type is associated with this function. Recall that thermoreceptors are specialized for detecting heat or cold.
4. Eliminate incorrect options: Photoreceptors, mechanoreceptors, and chemoreceptors are not involved in temperature detection. They are specialized for other sensory modalities.
5. Conclude the correct answer: Based on the information, thermoreceptors are the class of signaling receptors responsible for detecting changes in temperature in animals.