bbbbeeeeppppppp Flashcards
Vertebrate
a backbones animal
invertebrate
no backbone
Ganglion
a mass of nerve cells
gut
the digestive tract
ceolom
a body cavity that contains the internal organs
Bilateral Symmetry
the property of being divisible into symmetrical halves on either side of a unique plane.
Radial Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Asymmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
Sponges
Sponges, the members of the phylum Porifera
Cnidarians
Cnidaria is a phylum under Kingdom Animalia containing over 11,000 species of animals found exclusively in aquatic (freshwater and marine) environments
Flatworms
The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths
Roundworms
The nematodes or roundworms constitute the phylum Nematoda
Mollusks
Closed circulatory system
Open circulatory system
An open circulatory system is a type of circulatory system in which nutrients and waste are moved through the body with the assistance of a fluid which flows freely through the body cavity, rather than being contained in veins. Many invertebrates like insects and shellfish have an open circulatory system
Closed circulatory system
The closed circulatory system includes a heart, acting as the pump for circulation, and a network of arteries and veins of various sizes, spreading in an extensive web throughout the body
