negative geotropism
Movement directed away from the earth\'s gravitational force.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • negative geotropism — /nɛgətɪv dʒiˈɒtrəpɪzəm/ (say neguhtiv jee otruhpizuhm) noun geotropism orientated against gravity as a plant which grows upwards regardless of its spatial orientation. See positive geotropism …   Australian English dictionary

  • negative geotropism — noun the tendency of plant stems and other parts to grow upwards …   English new terms dictionary

  • negative — adj., n. & v. adj. 1 expressing or implying denial, prohibition, or refusal (a negative vote; a negative answer). 2 (of a person or attitude): a lacking positive attributes; apathetic; pessimistic. b opposing or resisting; uncooperative. 3 marked …   Useful english dictionary

  • geotropism — /dʒiˈɒtrəpɪzəm/ (say jee otruhpizuhm) noun a tropism occurring in response to gravitation, as the direction of growth of plants or the ability of some animals to avoid an upside down position in the air. See negative geotropism, positive… …   Australian English dictionary

  • geotropism — n. plant growth in relation to gravity. Phrases and idioms: negative geotropism the tendency of stems etc. to grow away from the centre of the earth. positive geotropism the tendency of roots to grow towards the centre of the earth. Derivatives:… …   Useful english dictionary

  • geotropism — [jē ä′trə piz΄əm] n. [ GEO + TROPISM] any positive (or negative) movement or growth of a plant or sessile animal in response to (or against) the force of gravity geotropic [jē΄ō träp′ik] adj …   English World dictionary

  • geotropism — SYN: geotaxis. [geo + G. trope, a turning] * * * ge·ot·ro·pism jē ä trə .piz əm n a tropism in which gravity is the orienting factor * * * ge·ot·ro·pism (je otґro piz əm) [geo + tropism] tropism in an organism in response to gravitational… …   Medical dictionary

  • positive geotropism — /pɒzətɪv dʒiˈɒtrəpɪzəm/ (say pozuhtiv jee otruhpizuhm) noun geotropism orientated towards the centre of the earth. See negative geotropism …   Australian English dictionary

  • nervous system — Anat., Zool. 1. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. 2. a particular part of this system. Cf. autonomic nervous system, central nervous system, peripheral nervous… …   Universalium

  • angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction       any member of the more than 300,000 species of flowering plants (division Anthophyta) …   Universalium

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