Worms are present in the Platyhelminthes, Annelid and Nematode lineages. How is the coelom used to differentiate among these different types of worms? Platyhelminthes exhibit a coelom only in the embryo, Annelids exhibit a coelom only in juveniles, and Nematodes exhibit a coelom in both embryos and adults. Platyhelminthes exhibit a coelom in embryos, Annelids exhibit a coelom only in juveniles and Nematodes lack a coelom. Platyhelminthes develop a coelom before the anal and oral pores develop, Annelids develop a coelom at the same time the anal and oral pores develop, and Nematodes lack a coelom. Platyhelminthes develop one coelom, Annelids develop two coelom, and Nematodes develop three coelom but then lose the one derived from mesoderm. Platyhelminthes lack a coelom, Annelids exhibit a coelom and Nematodes have a pseudocoelom.
Worms are present in the Platyhelminthes, Annelid and Nematode lineages. How is the coelom used to differentiate among these different types of worms? Platyhelminthes exhibit a coelom only in the embryo, Annelids exhibit a coelom only in juveniles, and Nematodes exhibit a coelom in both embryos and adults. Platyhelminthes exhibit a coelom in embryos, Annelids exhibit a coelom only in juveniles and Nematodes lack a coelom. Platyhelminthes develop a coelom before the anal and oral pores develop, Annelids develop a coelom at the same time the anal and oral pores develop, and Nematodes lack a coelom. Platyhelminthes develop one coelom, Annelids develop two coelom, and Nematodes develop three coelom but then lose the one derived from mesoderm. Platyhelminthes lack a coelom, Annelids exhibit a coelom and Nematodes have a pseudocoelom.
Chapter23: Animals I: Major Invertebrate Groups
Section: Chapter Questions
Problem 13SA
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Transcribed Image Text:Worms are present in the Platyhelminthes, Annelid and Nematode lineages. How is
the coelom used to differentiate among these different types of worms?
Platyhelminthes exhibit a coelom only in the embryo, Annelids exhibit a coelom
only in juveniles, and Nematodes exhibit a coelom in both embryos and adults.
Platyhelminthes exhibit a coelom in embryos, Annelids exhibit a coelom only in
juveniles and Nematodes lack a coelom.
Platyhelminthes develop a coelom before the anal and oral pores develop,
Annelids develop a coelom at the same time the anal and oral pores develop,
and Nematodes lack a coelom.
Platyhelminthes develop one coelom, Annelids develop two coelom, and
Nematodes develop three coelom but then lose the one derived from
mesoderm.
Platyhelminthes lack a coelom, Annelids exhibit a coelom and Nematodes have
a pseudocoelom.
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