kingdoms Flashcards
animal with a backbone
vertebrate
animal without a back bone
invertebrate
a mass of nerve cells
ganglion
a digestive tract
gut
body cavity that contains internal organs
colem
the two sides of its body mirror each other
bilateral symmetry
body is organized around a center
radical symmetry
its body is not organized around a center
Asymmetry
a soft porpous substance originally consisting of the fiberus skeleton of an invertebrate
sponges
an aquatic invertebrate animal of the phylum cndaria
cnidarians
a worm of a phylum such as tapeworms
flatworms
a parasite found in animals intestines
round worms
consisting of snails slugs and octopuses that are invertebrates
Mollusks
organism that obtains food by feeding on other organisms
consumer
pump blood into a hemocoel with the blood
Open circulatory system
have the blood closed at all times within vessels of different size and wall thickness
Closed circulatory system
are a large phylum
Annelid worms
a rigid external covering for the body in some invertebrate animals
Exoskeleton
an eye consisting of an array of numerous small visual units, as found in insects and crustaceans
Compound eye
either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods
Antenna
the process of transformation from an immature form to an adult form in two or more distinct stages.
Metamorphosis
an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.
Endoskeleton
a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels
Water vascular system
