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Found Invertebrate 21 times.

Displaying results 1 to 10.

1. Arthropod
An arthropod is a member of a phylum of of invertebrate animals that includes insects, arachnids (spiders and mites), and crustaceans (crabs, lobsters, pillbugs, shrimp, etc.). They are members of the phylum Arthropoda and are characterized by having exoskeletons and jointed appendages. This word comes from the Greek words arthron (joint) and podos (foot).

2. Brachiopod (Brachiopoda)
A phylum of invertebrate animals often grouped with two other phyla under the name "Lophophorates." General characteristics include: a pair of protective shells (giving them a superficial resemblance to the bivalves - i.e. clams), a stalk protruding from the rear called a "pedicle" which anchors the animal to the sea floor, and a lophophore (a ridge with many tiny tentacles on it, used to catch food particles floating by). Brachiopod shells come in many different shapes and sizes. Brachiopods were extremely abundant during the Paleozoic era (both in terms of numbers of individuals and numbers of species), but were practically wiped out around 300 million years ago during the Permian mass extinction. Compare gastropod

3. Circulatory system, open
A system in which the circulating fluid is not enclosed in vessels at all times; found in insects, crayfish, some mollusks, and other invertebrates.

4. Drift
* Floating or non-mineral burden of a stream * Voluntary or accidental dislodgment of aquatic invertebrates from the stream bottom into the water column where they move or float with the current.

5. Drift (invertebrate drift)
Collectively, stream invertebrates (almost wholly the aquatic larval stages of insects) that voluntarily or accidentally leave the substrate to move or float with the current, as well as terrestrial invertebrates that drop into the stream. Also, any detrital material transported in the water current.

6. Drift feeders
Fish and other predators that forage on invertebrates drifting on the water surface or in the water column.

7. Genbank
A database of nucleic acid and protein sequences at the National Library of Medicine in the United States of America, compiled from international sources. It has sequence data in 13 different categories: primate, mammal, rodent, vertebrate, invertebrate, organelle , RNA , bacteria , plant, virus , bacteriophage , synthetic, and other. It is similar to the European Molecular Biology Lab gene bank in Germany. It can be found at http://www.ncbi.nlm.nih.gov/

8. Hemocyte
A hemocyte is a blood cell. The term tends to refer to the blood cells found in invertebrate animals.

9. Hemolymph
The fluid which flows through the hemocoel of invertebrates which have open circulatory systems, like mollusks, arthropods, and tunicates. The fluid is like a combination of the fluids blood and lymph in vertebrates.

10. Hydroskeleton (hydrostatic skeleton)
A type of skeleton found in many soft-bodied invertebrates which consists of water-filled body cavities controlled by muscles. Hydroskeletons are found in echinoderms (starfish, sea urchins), annelids (earthworms), nematode s, and a number of other wormlike invertebrate phyla .


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