Answer: Chemoreceptors.
- A Photoreceptors
- B Chemoreceptors
- C Mechanoreceptors
- D Thermoreceptors
Correct answer: B. Chemoreceptors
Explanation: Chemoreceptors respond to chemicals dissolved in fluid, underlying the senses of smell and taste.
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.