Which Statement About the Respiratory Organs of Animals Is True

question 247

Multiple Choice

Which statement about the respiratory organs of animals is true?

• A) Most water-breathing animals have lungs.
• B) Most air-breathing animals have gills.
• C) External gills are highly branched, thin extensions that maximize diffusion distance.
• D) Lungs are usually unpaired and elastic.
• E) The respiratory organs of air-breathing insects are called tracheae.

---

Definitions:

Amplitude

The height or magnitude of a wave signal, illustrating the intensity or level of fluctuation.

Pitch

The perception of how high or low a sound is, fundamentally related to the frequency of the sound wave.

Brightness And Loudness

Terms describing the perception of the intensity of light and sound, respectively, with brightness relating to visual perception and loudness to auditory perception.

Colour And Timbre

Attributes of sound and light; color refers to the visual property determined by wavelength, and timbre to the quality of a sound that distinguishes different types of sound production.