11 Terms
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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
Mesenteric filament
Natural environment; Coral reefs
The cord of tissue In sea anemones that runs along the edge of incomplete mesenteries and which bear glandular cells and nematocysts; they are used in digestion and become acontia toward the pedal ...
Relative frequency
Natural environment; Coral reefs
The number of items of a certain type divided by the number of all the numbers being considered.
Cell membrane
Natural environment; Coral reefs
The structure enveloping a cell, enclosing the cytoplasm and forming a selective permeability barrier which permits the passage of solvents and solutes into and out of cells. It consists of lipids, ...
Radial symmetry
Natural environment; Coral reefs
A basic morphological plan of organisms that have their body parts arranged around a central axis. Such organisms tend to be circular or cylindrical in shape, e.g., a coral polyp, or have projections ...
Sensor
Natural environment; Coral reefs
A device that receives electromagnetic radiation and converts it into a signal that can be recorded and displayed as numerical data or as an image.
Epitheca
Natural environment; Coral reefs
A layer of calcium carbonate that grows outside corallite walls.
Zeitgeber
Natural environment; Coral reefs
A periodic environmental signal that entrains a biological rhythm. For example, a cycle for a circadian rhythm, but may also be a temperature or even social cycle.
