Echiurans

Q12: The Errantia<br>A)belong to the smallest and most

Q13: The most diverse class of annelids is

Q14: The Errantia have separate sexes,but the earthworms

Q15: The circulatory system in the earthworm<br>A)is absent.<br>B)is

Q16: Reproduction in the earthworm involves<br>A)asexual budding.<br>B)self-fertilization.<br>C)cross-fertilization between

Q18: The cocoon in the earthworm is produced

Q19: Annelids may be characterized as protostomes,with spiral

Q20: Errantia differ from other annelids because errantia

Q21: In the annelids,each internal compartment is lined

Q22: Class Errantia is a _ taxon because