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Botany
Quiz #2 Vocab
19
Biology
9th Grade
05/12/2007

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Term
Angiosperm
Definition
a flowering plant that produces seeds within a fruit.
Term
Alternation of Generations
Definition
The alternation of sexual reproduction and asexual reproduction in certain plants.
Term
Auxins
Definition
Hormones ivolved in plant cell elongation, shoot and bud growth, and rooting.
Term
Bryophtes
Definition
Plants that have no vasuclar tissue and absorb nutrients and water from the soil through rootlike hairs
Term
Chemotropism
Definition
The tendancy of an organism or a part of an organism to grow towards or away from a chemical stimulus
Term
Ethylene
Definition
a gaseous plant hormone that plays a role in the ripening of fruits
Term
ferns
Definition
plants that have leaves, most have an underground stem, most produce spores on the undersie of their leaves and can live in all climates
Term
gravitropism
Definition
the growth of a plant in a particular direction in response to gravity
Term
gibberellins
Definition
a plant hormone that stimulates the growth of stems and leaves
Term
gametophyte
Definition
in alternation of generations, the phase in which gametes are formed, a haploid indvidual that produces gametes.
Term
Gymnosperm
Definition
A woody, vascular seed plant whose seeds are not enclosed by an ovary or fruit.
Term
Lateral meristem
Definition
dividing tissue that runs parallel to the long axis of a stem or a root.
Term
meristem
Definition
A region of undifferentiated plant cells that are capable of dividing and developing into specialized plant tissues
Term
Phototropism
Definition
A plant growth movement that occurs in response to the direction of a source of light
Term
Sporophyte
Definition
in plants and algae that have alternation of generations, the diploid individual or generation that produces haploid spores
Term
Thigmotropism
Definition
a response of an organism or part of an organism to touch
Term
Tropism
Definition
The movement of all or part of an organism in response to an external stimulus, such as light or heat; movement is either toward or away from the stimulus
Term
Apical meristem
Definition
The growing region at the tips of stems and roots in plants
Term
Growth Regulators
Definition
any
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