Excretion of nitrogenous wastes in Echinoderms is via
A) tube feet.
B) nephridia.
C) the madreporite.
D) tube feet and nephridia.
E) tube feet and the madreporite.
Correct Answer:
Verified
Q3: Which of these statements about echinoderms is
Q4: Although echinoderms appear to have radial symmetry,
Q5: When the spicules of an echinoderm are
Q6: The water vascular system is
A) coelomic in
Q7: The tube feet in echinoderms are extended
Q9: The earliest larval stage of echinoderms
A) is
Q10: Chordates are so named because of their
A)
Q11: At some stage of development, chordates possess
A)
Q12: A structure found in lancelets (cephalochordates) but
Q13: All craniates have
A) a distinct head with
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