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Monterey Bay Aquarium Research Institute
Marine Botany




  • macroalgae - large, macroscopic algae, seaweeds
  • macrothallus - large, conspicuous phase of organisms's life history
  • mastigoneme - fine hairlike appendage of a flagellum
  • medulla - central tissue of thallus
  • meiosis - nuclear division in which chromosome number is reduced from diploid to haploid, genetic segregation of chromosomes
  • meristoderm - superficial, outer layer of dividing cells in brown algae in the order Laminariales
  • meroplankton - organisms that spend part of their life cycle as plankton and part on the benthos
  • mesokaryotic - having chromosomes that persist in condensed form at all times, the condition of the dinoflagellate nucleus
  • microthallus - the tiny, inconspicuous stage of an organism's life history, alternating with the macrothallus stage
  • moneocious - (one house) producing male and female gametes on the same individual
  • monopodial - mode of development where primary axis maintains main line of growth and secondary laterals are produced off that main axis
  • monostromatic - blade composed of a single layer of cells
  • monotypic - a genus having only one species
  • multialxial - axis composed of multiple, longitudinal filaments, each derived from one apical cell


Last updated: Feb. 05, 2009