Examlex
In the alternations of generations life cycle, the zygote divides to produce a ______, and a spore divides to produce a ______.
Roundworms
A phylum of worms known as Nematoda, characterized by their elongated, cylindrical, and unsegmented bodies.
Pseudocoelom
Body cavity lying between the digestive tract and body wall that is incompletely lined by mesoderm.
Tube-Within-a-Tube
A design characteristic of the body plans of many animals, where the outer tube represents the body wall, and the inner tube represents the alimentary canal or gut.
Flukes
Parasitic flatworms that infect the liver, lungs, and other organs of their hosts, with life cycles involving one or more intermediate hosts.
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