many-celled animals

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• Social behaviour in animals — Introduction       actions of animals living in communities. Such behaviour may include the feeding of the young, the building of shelters, or the guarding of territory. General characteristics       Social behaviour (Social behaviour in animals) …   Universalium

• Representative animals poisonous when eaten — ▪ Table Representative animals poisonous when eaten name and distribution toxic principle toxic effects and comments Protozoans one celled animals dinoflagellate (Gymnodinium breve); Gulf of Mexico, Florida unknown irritation of mucous membranes… …   Universalium

• morphology — morphologic /mawr feuh loj ik/, morphological, adj. morphologically, adv. morphologist, n. /mawr fol euh jee/, n. 1. the branch of biology dealing with the form and structure of organisms. 2. the form and structure of an organism considered as a… …   Universalium

• coe|lom — «SEE luhm», noun. the body cavity of most many celled animals, developed within the mesoderm and different from the intestinal cavity: »A different type of body cavity, the coelom, exists in the starfishes…and is present in all animals of greater …   Useful english dictionary

• gas|tru|la — «GAS tru luh», noun, plural lae « lee». a stage in the development of all many celled animals, when the embryo is usually saclike and composed of two layers of cells. ╂[< New Latin gastrula (diminutive) < Greek gast , gastrós stomach] …   Useful english dictionary

• 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

• fungus — fungic /fun jik/, adj. funguslike, adj. /fung geuhs/, n., pl. fungi /fun juy, fung guy/, funguses, adj. n. 1. any of a diverse group of eukaryotic single celled or multinucleate organisms that live by decomposing and absorbing the organic… …   Universalium

• sex — /seks/, n. 1. either the male or female division of a species, esp. as differentiated with reference to the reproductive functions. 2. the sum of the structural and functional differences by which the male and female are distinguished, or the… …   Universalium

• 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

• animal — animalic /an euh mal ik/, animalian /an euh may lee euhn, mayl yeuhn/, adj. /an euh meuhl/, n. 1. any member of the kingdom Animalia, comprising multicellular organisms that have a well defined shape and usually limited growth, can move… …   Universalium

• marine ecosystem — Introduction       complex of living organisms in the ocean environment.       Marine waters cover two thirds of the surface of the Earth. In some places the ocean is deeper than Mount Everest is high; for example, the Mariana Trench and the… …   Universalium