Athropoda
A body covering, typically made of chitin, that provides support and protection.
What is an Exoskeleton?
A rod of tough, flexible material that runs the length of a creature's body, providing the majority of it's support.
What is a Notochord?
The moist layer covering an earthworm's epidermis.
What is a cuticle?
This allows the blood to flow out of the blood vessels and into various body cavities so that the cells are in direct contact with the blood.
What is an Open Circulatory System?
These promote the formation of bone tissue by producing the bone matrix.
What are Osteoblasts?
The bristles you feel on the surface of the earthworm.
What are setae?
A body region composed of a head and thorax fused together.
What is a Cephalothorax?
The most common example of a creature from class Agnatha.
What is a Lamprey eel?
The part of the grasshopper where food might be stored for later use after passing through the esophagus.
What is a grasshopper's crop?
Insect development consisting of three stages: egg, nymph, and adult.
What is incomplete metamorphosis?
Development that occurs inside the female, allowing the offspring to gain nutrients and vital substances from the mother through a placenta.
What is viviparous development?
The part of a crayfish that rests in the pericardial cavity in the dorsal part of its body.
What is a crayfish's heart?
The classification order of the insects biologists call all of the species "social insects".
What is Hymenoptera?
These sense various stimuli from the environment, then translate the stimuli into electrical signals that are sent to the brain.
What are receptors?
The part of a crayfish which, as blood passes through, cleans it of impurities and dumps those impurities back into the surroundings.
What is a green gland?