- المجال: Government
- Number of terms: 30456
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NOAA Coral Reef Conservation Program, National Oceanic and Atmospheric Administration, U.S. Department of Commerce
A hormone-like substance that is secreted by an organism into the environment as a specific signal to another organism, usually of the same species.
Industry:Natural environment
A non-motile male gamete produced by a spermatangium in red algae.
Industry:Natural environment
An article printed especially for private distribution in advance of the actual publication.
Industry:Natural environment
Any mixture of nitrogen and oxygen that contains less than the 78 percent nitrogen as found in ordinary air.
Industry:Natural environment
Diploid phase in the life cycle of red algae which produces haploid tetraspores.The tetrasporophyte is the site of meiosis, more specifically, the tetrasporangia where haploid tetraspores are produced. These tetraspores are released, settle, and grow into the gametophyte, completing the basic red algal life history.
Industry:Natural environment
In many animals, the body is divided into repeated subunits called segments, such as those in centipedes, insects, and annelid worms. Segmentation is the state of having or developing this type of body plan.
Industry:Natural environment
Mutualistic behavior in which larger animals, usually fishes, permit smaller animals, usually other species of fishes or invertebrates, to clean them of external parasites.
Industry:Natural environment
Refers to species with overlapping ranges but do not occupy the same space. They do not "live together".
Industry:Natural environment
