[Campbell Biology P.737] Which of the following phyla contains the most described species ac... | Practice Question

Which of the following phyla contains the most described species according to the provided information?

  • A: Mollusca
  • B: Annelida
  • C: Ectoprocta
  • D: Nemertea

Explanation

According to the species counts provided in the text: Mollusca 100,000 species , Annelida 16,500 species , Ectoprocta 4,500 species , Nemertea 900 species . Mollusca clearly has the most described species among the given options.