Metazoans

Metazoans
Metazoan Met`a*zo"an, n.; pl. {Metazoans}. (Zo["o]l.) One of the Metazoa. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • metazoans — n.; n. pl. [Gr. meta, after; zoon, animal] 1. A small phylum of endoparasitic, ciliated, multicellular organisms composed of two layers, lacking skeletal, muscular, nervous, digestive, respiratory or excretory elements. 2. Often regarded as… …   Dictionary of invertebrate zoology

  • Cambrian explosion — The Cambrian explosion or Cambrian radiation was the seemingly rapid appearance of most major groups of complex animals around Ma|530, as evidenced by the fossil record. [http://www.ucmp.berkeley.edu/cambrian/camb.html The Cambrian Period] ]… …   Wikipedia

  • phylogeny — phylogenetic /fuy leuh jeuh net ik/, phylogenetical, phylogenic, adj. phylogenetically, adv. phylogenist, n. /fuy loj euh nee/, n. 1. the development or evolution of a particular group of organisms. 2. the evolutionary history of a group of… …   Universalium

  • Plankton — For other uses, see Plankton (disambiguation). Photomontage of planktonic organisms Plankton (singular plankter) are any drifting organisms (plants …   Wikipedia

  • Sponge — This article is about the aquatic animal. For the porous cleaning tool, see Sponge (material). For other uses, see Sponge (disambiguation). Sponge Temporal range: Ediacaran–Recent …   Wikipedia

  • Choanoflagellate — Choanoflagellates Scientific classification Domain …   Wikipedia

  • Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …   Universalium

  • Life Sciences — ▪ 2009 Introduction Zoology       In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …   Universalium

  • MicroRNA — The stem loop secondary structure of a pre microRNA from Brassica oleracea. A microRNA (abbreviated miRNA) is a short ribonucleic acid (RNA) molecule found in eukaryotic cells. A microRNA molecule has very few nucleotides (an average of 22)… …   Wikipedia

  • Trichoplax adhaerens — Taxobox name = Trichoplax adhaerens image caption = Light microscope image of Trichoplax (specimen ca. 0.5 mm across) regnum = Animalia subregnum = Metazoa superphylum = Parazoa phylum = Placozoa genus = Trichoplax species = adhaerens binomial =… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”