[Campbell Biology P.763] Which of the following is a characteristic feature of sea daisies c... | Practice Question

Which of the following is a characteristic feature of sea daisies clade Asteroidea according to the provided text?

  • A: They typically have long, flexible arms used for serpentine movements.
  • B: They are armless species that absorb nutrients through a membrane surrounding their body.
  • C: They are typically larger than a centimeter in diameter and possess numerous tube feet for locomotion.
  • D: They live in freshwater environments and have a central disk with radiating nerve cords.

Explanation

The text states: 'The clade Asteroidea, to which sea stars belong, also includes a small group of armless species, the sea daisies. ... Sea daisies absorb nutrients through a membrane that surrounds their body.' This directly matches option B.