1 Flashcards
Vertebrates
an animal that has a backbone
invertabrates
an animal that does not have a backbone
consumer
an organism that eats other organisms or organic matter
ganglion
a mas of nerve cells
gut
the digetive tract
coelom
a body cavity that contains the internal organs
bilateral symmetry
a form of asexual reprodution in single-celled organisms by which one cell divides into two cells of the same size
radial symmetry
symmetry around a central axis, as in a starfish or a tulip flower
asymmetry
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sponges
Sponges are the basalmost clade of animals of the phylum Porifera /pɒˈrɪfərə/; meaning “pore bearer”.
cindarians
a biological
flatworms
he flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
roundworms
The nematodes /ˈnɛmətoʊdz/ or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a broad range of environments
mollusks
The molluscs compose the large phylum of invertebrate animals known as the Mollusca. Around 85,000 extant species of molluscs are recognized. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms
open circulatory system
Vertebrates, and a few invertebrates, have a closed circulatory system. Closed circulatory systems have the blood closed at all times within vessels of different size and wall thickness. In this type of system, blood is pumped by a heart through vessels, and does not normally fill body cavities.
