Arthropod Dissection - Vu - PAP Bio - 2 - 4/8/14
The objective of this dissection is to learn about the internal and external anatomy of arthropods, such as the grasshopper or crayfish, and their role in the ecosystem.
Arthropods are distinguished from other animals by having an exoskeleton, a body divided into three parts, jointed appendages, and bilateral symmetry. They are the largest phylum and make up about 90% of the animal kingdom.
Arthropods can live virtually anywhere, even in extreme environments.
Animals that eat insects, such as birds, snakes, or toads may prey on arthropods.
Arthropods may eat either plants or other insects.
Legs, eyes, antennae, mouth, telson, exoskeleton
exoskeleton, antennae, claws, legs, gills, eyes
Crayfish breathe through gills, which are attached to walking legs and located behind the exoskeleton. The gills are attached to the legs because when the crayfish walks through the water, it circulates over the gills.