Coral reefs

Coral reefs

Coral reefs are structures formed from the calcium carbonate secretions of corals. They are colonies of tiny animals in marine areas containing few nutrients.

Industry: Natural environment

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Coral reefs

Photosynthetically active radiation (PAR)

Natural environment; Coral reefs

Those wavelengths of light that can be absorbed by chlorophyll or other light harvesting pigments.

Chemoautotroph

Natural environment; Coral reefs

An organism that utilises oxidation of inorganic chemicals for its energy and carbon from inorganic carbon dioxide for cell growth; these organisms are also called chemolithotrophs.

Mesenchyme

Natural environment; Coral reefs

In cnidarians, a primitive "connective tissue" located between the epidermis and the gastrodermis. If it contains no cell components, it is termed "mesoglea"; undifferentiated cells of an embryo, ...

The ability of an individual organism to distinguish its own tissues from those of another; the recognition of antigens, expressed on the surface of cells of non-self origin. Allorecognition has been ...

Blue-green algae

Natural environment; Coral reefs

The former name for the blue-green bacteria, now classified as Cyanobacteria. A group of prokaryotic cells that use chlorophyll on intracytoplasmic membranes for photosynthesis. The blue green colour ...

Active transport

Natural environment; Coral reefs

The pumping of molecules or ions through a membrane against their concentration gradient.This action requires the expenditure of energy through ATP hydrolysis.

Linnaeus, Carolus

Natural environment; Coral reefs

The 18th century Swedish botanist (1707-1778) who established the modern binomial system of biological nomenclature for plants and animals. His non-latinized name was Carl von Linne.