Animal Kingdom Flashcards
Represent the overwhelming majority of the phylum Chordate with currently about 64,000 species described.
Vertebrates
Are animals that neither possess nor develop a vertebral column, derived from the notochord.
Invertebrates
A person or thing that eats or uses something.
Consumer
A noncancerous lump, often on the tendons or joints of wrists and hands.
Ganglion
The stomach or belly.
Gut
Located between the intestinal canal and the body wall.
Coelom
is a characteristic of animals that are capable of moving freely through their environments. Compare radial symmetry.
Bilateral Symmetry
arrangement of parts of an organism around a single main axis, so that the organism can be divided into similar halves by any plane that contains the main axis.
Radial Symmetry
lack of equality or equivalence between parts or aspects of something; lack of symmetry.
Asymmetry
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.
Sponges
is a phylum containing over 10,000 species of animals found exclusively in aquatic environments: they are predominantly marine species. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.
Cnidarians
or Platyhelminthes, Plathelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
Flatworms
constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a very broad range of environments.
Roundworms
compose the large phylum of invertebrate animals known as the Mollusca. Around 85,000 extant species of molluscs are recognized.
Mollusks
Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood.
Open 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.
Closed circulatory system
also known as the ringed worms or segmented worms, are a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches.
Annelid worms
each of the parts into which something is or may be divided.
Segment
a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection.
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
is a hydraulic system used by echinoderms, such as sea stars and sea urchins, for locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet.
Water vascular system
