Module 12 Flashcards
Physiology
The study of life processes in an organism
Vegetative organs
The parts of a plant (such as stems, roots, and leaves) that are not involved in reproduction
Reproductive plant organs
The parts of a plant (such as flowers, fruits, and seeds) involved in reproduction
Stem cells or
Undifferentiated cells
Cells that have not specialized in any particular function
Xylem
Nonliving vascular tissue that carries water and dissolved minerals from the roots of a plant to its leaves
Phloem
Living vascular tissue that carries sugar and organic substances throughout a plant
Girdling
The process of cutting away a ring of inner and outer bark all the way around a tree trunk
Deciduous plant
A plant that loses its leaves for winter
Nastic movement
A plant’s response to a stimulus such that the direction of the response is preprogrammed and not dependent on the direction of the stimulus
Stimulus
An environmental change that triggers a response
Pore spaces
Spaces in the soil that determine how much water and air the soil can hold
Loam
A mixture of gravel, sand, silt, clay, and organic matter
Translocation
The process by which organic substances move through the phloem of a plant
Hormones
Chemicals that circulate throughout multicellular organisms, regulating cellular processes by interacting with specifically targeted cells
Phototropism
A growth response to light
