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Four of the following are chelicerates. Which one is the exception?
UV Light
Ultraviolet light, a type of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, responsible for sunburns and used in disinfection.
Skin
The body's largest organ, serving as a protective barrier against environmental hazards, regulating temperature, and providing sensory information.
Distinct Sexes
The presence of separate and unique male and female organisms in a species, each contributing different gametes for reproduction.
Muscle Types
Vertebrates have three types of muscle tissue: skeletal (voluntary movement), cardiac (heart pumping), and smooth (involuntary actions like digestion).
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