20 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
Growth band
Natural environment; Coral reefs
A band formed yearly on coral by the secretion of caco3; one yearly growth band contains two smaller bands representing winter growth and summer growth.
Spiral cleavage
Natural environment; Coral reefs
A developing embryo has spiral cleavage if, as it undergoes cleavage and changes from a four-cell embryo to an eight-cell embryo, the cells divide at slight angles to one another, so that the none of ...
Actinotroch
Natural environment; Coral reefs
A larval form found in the Phoronida (horseshoe worms).
Telolecithal
Natural environment; Coral reefs
An egg cell in which the yolk is not evenly distibuted throughout the cytoplasm, but is concentrated in one location, and cleavage is incomplete, e.g., a bird egg.
Insular
Natural environment; Coral reefs
Relating to, or characteristic of, or situated on an island.
Trochophore larva
Natural environment; Coral reefs
The ciliated planktonic larva of many invertebrates, including polychaete worms, mollusks, and rotifers.
