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Photosynthesis
use by green plants of the energy in sunlight to carry out chemical reactions
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Phylum
one of the major divisons fo the kingdoms of living things
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Physiology
the study of the function of living things, including such processes as nutrition, movement, and reproduction
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Pistil
the female part of the plant
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plant kingdom
one of the five kingdoms of living things
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pollen
the male sex cellas in plants
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pollination
the carrying of pollen grains to the female sex cells for fertilization
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proteins
complex organic molecules made up of amino acids
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protista
the kingdom of organisms, mostly single celled, whose cell contain a nucleus
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protoplasm
the jelly-like material in a cell, both inside and outside the nucleus, where the chemical reactions that support life take place
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protozoa
single-celled animal, such as amoebas, that are the most primitive form of animal life
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punctuated equilibrium
a possible pattern for evolution; in p.e., e long periods of little change in living things are interrupted by short periods of rapid change.
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recessive trait
in genetics, a trait that must be contributed by both parents in order to appear in the offspring
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recombinant DNA
techniques, usually associated with genetic engineering, in which strands of DNA from different sources are spliced together to form DNA for a new life form.
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Respiration
the conversion of oxygen by living things into energy by which they continue life.
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