Which of the following is not true about echinoderms?
(A) An excretory system is absent
(B) Sexe... VIDEO
Which of the following is not true about echinoderms?
(A) An excretory system is absent
(B) Sexes are separate and reproduction is sexual
(C) Development is indirect with free-swimming larva
(D) Mouth is present on the upper (dorsal) side and anus on the lower (ventral) side
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