You searched for gill - Biology Articles, Tutorials & Dictionary Online

Gill a woody glen; a narrow valley containing a stream. Origin: Icel. Gil. 1. (Science: anatomy) An organ for aquatic... Read More

Definition noun, plural: European lancelets A lancelet species of the genus Branchiostoma and is commonly used as a model... Read More

siphon 1. A device, consisting of a pipe or tube bent so as to form two branches or legs of unequal length, by which a... Read More

Definition noun An organ system comprised of organs and structures associated for respiration or gas exchange Supplement An... Read More

Null Hypothesis Definition Null hypothesis is defined as “the commonly accepted fact (such as the sky is blue) and... Read More

Definition noun, singular: lamella (general) Thin structures resembling a plate. (cell biology) Intergrana thylakoids, i.e.... Read More

oyster 1. (Science: marine biology, zoology) Any marine bivalve mollusk of the genus ostrea. They are usually found adhering... Read More

Archaea is a group of prokaryotic life forms distinct from bacteria forming a separate domain of life. They possess... Read More

Chordata Definition What is Chordata? Chordata is the phylum of the animal kingdom that includes a large number of animal... Read More

Hyaline Cartilage Definition Before we define hyaline cartilage, let us understand what cartilage is. What is cartilage? Is... Read More

Definition noun A taxonomic class comprised of cartilaginous fish Supplement Chondrichthyes is taxonomic superclass of... Read More

Definition noun A taxonomic superclass of a diverse group of fish that have skeletons composed primarily of bone... Read More

Definition noun, plural: agnathans Any of the jawless fish species belonging to the taxonomic superclass Agnatha of the... Read More

Definition noun, plural: tunicates Any of the sessile marine chordates of the subphylum Tunicata Supplement Chordates... Read More

The Mary River Turtle (Elusor macrurus) has been named recently as one of the species on the brink of extinction. That is... Read More

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