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Complex ring of hollow tentacles used as a feeding organ. The tentacles are covered by cilia, which generate a current to bring food particles into the mouth. The structure is only found in the brachiopods, phoronids, and bryozoans. More info?
Industry:Biology
When stiff body parts are connected by a soft flexible region, the body is said to be jointed.
Industry:Biology
The portion of the digestive tract between the stomach and anus; it is the region where most of the nutrients and absorbed.
Industry:Biology
In birds and reptiles, the maintaining of a constant temperature during the development of the embryo. Birds incubate their eggs by sitting on them (also called brooding),while other animals, like crocodiles, bury their eggs in organic matter. If eggs are not incubated, the embryos within those eggs generally die. Some dinosaurs may have incubated their eggs by burial in sediment, in organic matter, or by brooding like birds.
Industry:Biology
The organization and arrangement of tissue (“histo” is from the Greek word for tissue). Since eggshell is a tissue, eggshell histostructure describes the two- and three-dimensional organization of mineral crystals and shell components.
Industry:Biology
That part of the body at the "front" end, where the brain, mouth, and most sensory organs are located.
Industry:Biology
A slitlike or porelike opening connecting the pharynx of a chordate with the outside of the body. Gill slits may contain the gills and be used for gas exchange, as in most fish, but may also be used for filter-feeding, or may be highly modified in land-dwelling vertebrates.
Industry:Biology
Stiffenings which support the flesh between the gill slits of chordates. In most vertebrates, the first gill arches have been modified to form the jaw, and in tetrapods, the inner ear bones.
Industry:Biology
A category in the classification of plants and animals between species and family; genera- pl.
Industry:Biology
