Animal Characteristics
What is cleavage?
The structures on a flatworm which detect chemicals and disturbances in the environment
What are auricles?
The seive like structure of the water vascular system of echinoderms through which water enters
What is the madreporite?
The path of circulation where blood moves from the heart to the lungs and back; found in reptiles, birds and mammals
What is the pulmonary circuit?
An animal which has a false body cavity
What is a pseudocoelomate?
The free-swimming form of a cnidarian
What is the medusa?
What is gonochoric?
The flexible rod-like structure which establishes the mid-line of the chordate body
What is the notochord?
The thick epidermal sheet that surrounds the visceral mass of molluscsl; secretes shell (if present)
What is the mantle?
The opening in the blastula that will form the beginnings of the gut of the animal
What is a blastopore?
The cells of ctenophorans that produce adhesive for capturing prey
What are colloblasts?
The rasping tongue-like structure found in some molluscs
What is the radula?
The structure found within fishes that allows them to maintain buoyancy
What is the swim bladder?
The visual unit of the compound eye of arthropods
What are ommatidia?
The form of development where the fate of the cells of an animal is determined very early in development
What is determinate development?
The small pores through which water enters the body of a sponge
What are ostia?
The condition where there is a fixed number of cells in an adult; this is characteristic of nematodes
What is eutely?
The condition in which an animal is able to regulate their own body temperature internally
What is endothermic?
What is the operculum?
The form of cleavage where the cells divide on a plane parallel or perpendicular to the central axis of the embryo
What is radial cleavage?
The gelatinous material found between the epidermis and gastrodermis of a cnidarian
What is the mesoglea?
The segmented nervous system of arthropods
What are the ventral ganglia?
The process of gas exchange which occurs in amphibians and involves the skin
What is cutaneous respiration?
The outermost layer of the amniotic egg
What is the chorion?