Vertebrae Flashcards
Consumer
an organism that eats other organisms or organic matter.
Invertebrate
an animal that does not have a backbone
gut
the digestive tract
ganglion
a mass of nerve cells
coelom
a body cavity that contains the internal organs
vertebrate
an animal with a backbone
asymmetry
a body not organized around a center
radial symmetry
a body is organized around a center
bilateral symmetry
a body mirrors each side
cnidarians
an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates
flatworm
The flatworms, flat worms, Platyhelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates
roundworm
The nematodes or roundworms constitute the phylum Nematoda, with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments
mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species
sponge
Sponges, the members of the phylum Porifera, are a basal animal clade as a sister of the Diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells
open circulatory system
Open circulatory systems are systems where blood, rather than being sealed tight in arteries and veins, suffuses the body and may be directly open to the environment at places such as the digestive tract. Open circulatory systems use hemolymph instead of blood
