somthing 2 Flashcards
Vertebrates
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
Closed circulatory system
the blood closed at all times within vessels of different size and wall thickness
Open circulatory system
the heart is pumping the blood through out the body
Mollusks
an invertebrate of a large phylum which includes snails, slugs, mussels, and octopuses. They have a soft unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
Roundworms
The nematodes or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a broad range of environments.
Flatworms
The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
Cnidarians
an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates.
sponges
Sponges, the members of the phylum Porifera, are a basal Metazoa 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
Asymmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
Radial Symmetry
symmetry around a central axis, as in a starfish or a tulip flower.
Bilateral Symmetry
the property of being divisible into symmetrical halves on either side of a unique plane.
Coelom
the body cavity in metazoans, located between the intestinal canal and the body wall.
. Gut
the stomach or belly.
Ganglion
a structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
Consumer
a person or thing that eats or uses something.
