Module 15 Vocabulary Flashcards
Physiology
The study of life processes in an organism.
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.
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.
Cohesion
The phenomenon that occurs when individual molecules are so strongly attracted to each other that they tend to stay together, even when exposed to tension.
Translocation
The process by which organic srganic substances move through the phloem of a plant.
Hormones
Chemicals that circulate throughout multicellular organisms, regulating cellular processes by interacting with specifically targeted cells.
Phototrophism
A growth response to light.
Gravitrophism
A growth response to gravity.
Thigmotrophism
A growth response to touch.
Perfect Flowers
Flowers with both stamens and carpels.
Imperfect Flowers
Flowers with either stamens or carpels, but not both.
Pollination
The transfer of pollen grains from the anther to the carpel in flowering plants.
Double Fertilization
A fertilization process that requires two sperm to fuse with two other cells.
Seed
An ovule with a protective coating, encasing a mature plant embryo and a nutrient source.
