Types of Sensory Stimuli Practice Test

A student sets up a terrarium with a lizard on a rock. A heat lamp is positioned above one side (shown by red heat lines), and a cricket is in a small container releasing odor lines (labeled “cricket chemicals”) on the other side. These stimuli come from outside the lizard, and organisms detect different types of stimuli. Which stimulus is present in the environment?

A student observes a fish in a tank. A dropper adds food scent (shown as wavy lines labeled “food chemicals”) into the water on the right side, and a flashlight shines into the tank from above on the left side. These stimuli originate outside the fish, and organisms detect different types of stimuli. Which stimulus is present in the environment?