invertebrate Flashcards
(24 cards)
comprise all species of animals within the subphylum
Vertebrates
Invertebrates are animals that neither possess nor develop a vertebral column, derived from the notochord. This includes all animals apart from the subphylum Vertebrata
Invertebrates
a person who purchases goods and services for personal use.
Consumer
A noncancerous lump, often on the tendons or joints of wrists and hands.
Ganglion
transfer food to the digestion organs. In large bilaterians, the gastrointestinal tract generally also has an exit, the anus, by which the animal disposes of solid wastes.
Gut
refers to the main body cavity in most multicellular animals and is positioned inside the body to surround and contain the digestive tract and other organs
Coelom
a characteristic of animals that are capable of moving freely through their environments
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
Sponges are animals of the phylum Porifera. 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
Cnidaria 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
The flatworms, or Platyhelminthes, Plathelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates
Flatworms
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
system in which a fluid in a cavity
Open circulatory system
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
The annelids, 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
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Segment
is the external skeleton that supports and protects an animal’s body, in contrast to the internal skeleton (endoskeleton) of, for example, a human. In usage, some of the larger kinds of exoskeletons are known as “shells”.
Exoskeleton
an eye consisting of an array of numerous small visual units, as found in insects and crustaceans.
Compound eye
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Antenna
The Metamorphosis is a novella by Franz Kafka, first published in 1915. It has been called one of the seminal works of fiction of the 20th century and is studied in colleges and universities across the Western world.
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
