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
The eukaryotic cell cycle and cell division in an organism with six chromosomes.
Decomposers (detritivores) feeding on dead plant and animal matter.
Yoshitomo Nara, Dead Flower.
The basal ganglia are clusters of gray matter that control learned movement and are involved with ...
A sample of work by a Grade 4 student with a specific learning disorder
A student creates a new blog about chemistry.