A student observes a wormlike organism crawling about on dead organic matter. Later, the organism sheds its outer covering. One possibility is that the organism is a larval insect (like a maggot). However, it might be a member of the phylum ________, and one way to distinguish between the two possibilities is by looking for ________.
A) Platyhelminthes; a cuticle of chitin
B) Nematoda; an alimentary canal
C) Annelida; a body cavity
D) Nematoda; a circulatory system
E) Annelida; muscle in the body wall
Nonpolar and polar bonds in an organic molecule
The eukaryotic cell cycle and cell division in an organism with six chromosomes.
Decomposers (detritivores) feeding on dead plant and animal matter.
Cortical Gray Matter in Monozygotic Twins Discordant for Schizophrenia
Organic Fertilizer
The USDA Organic Seal Foods Label