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Glossary: M is for ... metabolize monoecious mesophyte.
by Ariadne Unst

Glossary of M...

macronutrients (n.)
The nutritional elements, nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur, essential for normal plant growth, development, and reproduction. They are usually derived from the soil.

macrophyllous (adj.)
Having large leaves.

maculate (adj.)
Spotted or blotched.

mean annual increment (M.A.I. or m.a.i.) (n.)
The total increment of trees in a stand up to a given age, divided by that age, often expressed in annual cubic meters of growth per hectare (cubic feet of growth per acre).

manipulative (adj.)
Manipulative experiments involve two or more experimental variables. They must be designed carefully to avoid ambiguous results. Contrast with a mensurative experiment.

mean (n.)
In statistics, calculated by adding together all of the data values and dividing this sum by the total number of data values.

megagametophyte (n.)
The female gametophyte which develops from the megaspore and produces the female gamete(s).

meiosis (n.)
Reduction division resulting in the production of haploid gametes; a process consisting of two specialized nuclear divisions ultimately leading to the formation of eggs or sperm.

mensurative (adj.)
Mensurative experiments make measurements at one or more points in space or time. The only thing that varies in such an experiment is space or time. Contrast with a manipulative experiment.

mesic
Characterized by intermediate moisture conditions, neither decidedly wet nor decidedly dry. The mid-range of the moisture scale from wet to dry. Moist throughout the growing season (compare xeric).

mesocarp (n.)
The middle layer of a pericarp; this is the fleshy part of some fruits.

mesophyte (n.)
A plant whose normal habitat is neither very wet nor very dry.

Mesozoic (n.)
An era of geologic history marked by the cycads, evergreen trees, dinosaurs, marine and flying reptiles, and ganoid fishes.

metamorphism
(in Geology) The changes in the composition and textures of rock, caused by pressure, heat, and moisture. It results in a more compact and more highly crystalline condition.

metabolize (v.)
Change by the chemical processes that constantly take place in living organisms.

micronutrients (n.)
Nutritional trace elements, such as boron and manganese, that are necessary in minute quantities for normal plant growth.

mitochondria (n.)
Organelles (inside a cell) that oxidize organic energy for use in cellular metabolism.

mitosis (n.)
Normal division of a nucleus into two identical child nuclei by duplication and separation of chromosomes.

mode (n.)
In statistics, the most frequently occurring value in a data set.

monocotyledon (n.) (monocotyledonous, adj.)
A plant having a single cotyledon or seed leaf in the embryo. Flowering parts are often in multiples of three; leaves are often long and strap-like with parallel veins; roots are likely to be bulbs, corms, or rhizomes.
Includes grasses, lilies, irises, orchids, and palms.
A subclass of angiosperm.
Compare with dicotyledon.

monoecious
Having staminate and pistillate flowers in separate places on the same plant.

montane (n.)
The biogeographic zone of relatively moist cool upland slopes below timberline It is characterized by large evergreen trees as a dominant life form.

mountain climate (n.)
Trees do not grow at high altitudes.
Also see climate.

muck (n.)
Highly decomposed organic material formed under conditions of waterlogging. It contains few recognizable remains of the original plants.

mutation (n.)
An inherited and spontaneous change in the genetic structure of an organism.

mycelium (n.)
The mass of threadlike filaments constituting the vegetative body of a fungus.

mycorrhizal (adj.)
Having a symbiotic relationship between a fungus and the root of a plant.