protein- any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; "a diet high ...
When a tumor gives rise to a mass that projects into a lumen (a cavity or channel within a tubular organ), it is called apolyp. Most polyps are epithelial in origin. Strictly speaking, the termpolyprefers only to benign growths; a malignant polyp is referred to as apolypoid cancer in ...
a set of chromosome numbers in related species of organisms that erroneously suggests that the organisms are POLYPLOIDS (2). Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005Want to thank TFD for its existence? Tell a friend about us, add ...
Although this condition is believed to affect as many as 11 million adults and children, as many as two of every three people with hypothyroidism may not know they have the disease. Nicknamed "Gland Central" because it influences almost every organ, tissue, and cell in the body, the thyroid...
The polyp form is typically sessile, or non-moving, and attaches itself to a surface in a suitable, protected location to feed and continue to grow. The medusa form occurs when the cnidarian reaches maturity and can reproduce. The medusa form of cnidarians is typically motile or capable of ...
Common Feature Stinging cells, as stinging tentacles are characteristic features, tissue-level structure, life cycle has both asexual polyp and sexual medusa stages Number of germ layers 2 (therefore diploblastic) Symmetry Radial/Biradial Cephalization Absent Coelom None (Acoelomate) Digestion Incomplete...
Class Hydrozoa: small predatory polyploid or radial in appearance with possible tentacles Family Hydridae: refers to physical appearance Genus Hydra: polyp-like with a tubular body Lesson Quiz Course 6.1Kviews Hydra Nervous System The hydra's nervous system has unique characteristics. It does not co...
(in animals) a filamentous structure of mammalian skin formed of cornified epidermal cells that multiply in the hair follicle. Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005 hair (hār) [TA] ...
,Biology. ,pluralzo·ar·i·a,zo·ar·i·ums. a collection of distinct, individual zooids that make up a compound or colonial organism. the supporting structure for a polyp colony; polyzoarium. Discover More Other Words From zo·ar i·aladjective ...
asexual•But she was notjuxtaposedagainst anasexualimageof respectability.•Alpineflowersare often among the mostasexualof flowers.•Breedersofasexualplantsmustwaitfor theinventionstoaccumulateslowly within the samelineage.•Reproductioncan also beaccomplishedbyasexualsubdivisionofpolyps, each polypdividingto...