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Bio 94 Vocabulary Whole Book
Terms in this set (17)
abscisic acid (ABA)
a plant hormone that inhibits growth; it stimulates stomatal closure and triggers dormancy
In plants, the normal (often seasonal) shedding of leaves, fruits or flowers
the region at the base of a petiole where cell wall degredation occurs; results in the dropping of leaves
In animals, the uptake of ions and small molecules, derived from food, across the lining of the intestine and into the bloodstream
The amount of light of different wavelengths absorbed by a pigment. Usually depicted as a graph of light absorbed versus wavelength.
A change in a study organism's phenotype that occurs in response to labratory conditions
A change in an individuals phenotype that occurs in response to a change in natural environmental conditions
acid growth hypothesis
The hypothesis that auxin triggers elongation of plant cells by increasing the activity of proton pumps, making the cell wall more acidic and leading to the expansion of the cell wall and an influx of water
A bilaterian animal that lacks an internal body cavity (coelom).
Immunity to a particular pathogen or other antigen conferred by activated B and T cells in vertebrates. Characterized by specificity, diversity, memory, and self non-self recognition. Also called adaptive immune response.
rapid evolutionary diversification within one lineage, producing many descendant species with a wide range of adaptive forms
The tendency of certain dissimilar molecules to cling together due to attractive forces.
A root that develops from a plant's shoot system instead of from a plant's root system
The average number of female offspring produced by a female in a certain age class.
Clumping together of cells or viruses by antibodies or other cross-linking molecules
A fruit (ex. A raspberry) that develops from a single flower that has many separate carpels
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