Flashcards in Exam 2 Deck (41)
T/F: Plants w/aerenchyma in roots are adapted to drought conditions
T/F: Long day plants flower when the dark period
U.S. cold hardiness zones are defined by expected avg. winter temps
As relative humidity increases, the amount of water lost by plants decreases
Less than 1% of solar radiation reaching the earth is converted into chemical energy by photosynthesis
Name two cool season horticultural species
broccoli and azalea
Name two warm season horticultural species
tomato and corn
Name two horticultural crops in which GMO varieties are available
Corn and apples
What are the five elements that make up climate?
Temp, precipitation, sunlight, humidity, and wind
Hormones that cause apical dominance; synthetic versions used to root cuttings
Cuttings taken in late spring from new succulent growth.
Hormones that promote cell division, slow down leaf senescence, and stimulate callus growth in tissue culture.
Breaking dormancy in seeds by breaking the seed coat w/acid or rough (such as using sandpaper) treatment
Breaking dormancy in seeds by storing moist seeds at temps. near freezing for one or more months
Hormone that promotes fruit ripening; only type of hormone that is a gas.
Th growth of fruit w/o fertilization of the ovule(s) or after fertilized embryos are aborted
Hormones that stimulate cell division and/or cell elongation; involved in flower initiation and fruit growth and ripening.
Emergence in which the cotyledon(s) remain below the soil surface
The aging and death of a plant or any of its parts.
Emergence in which the cotyledon(s) are above the soil.
A plant that requires two seasons to complete its life cycle
A plant that lives for many years but flowers only once and then dies
Cuttings taken in summer from partially matured new growth of the season
The part of a stem graft that is placed on top is called the:
Propagation in which a long hanging branch is brought into contact w/the soil, covered and allowed to root
Which of the following plants can be propagated by dividing rhizomes
The initial chemical reaction tht begins flowering is called
the light sensitive protein that is blue in color and controls photoperiodic responses in plants is called:
The part of the seedling between the radicle and the cotyledons is called: