2.4 Plant development Flashcards
what is the stem of a flower called
Pedicel
what is the need of the endosperm for the zygote
food reserve
where does the germ come from in wheat
embryo
what part of the plant is flour
the endosperm
what is the genetics of the monocot embryo
diploid with equal genetics from both parents
genetics of endosperm (monocot)
triploid with 2x cont. from female, 1x from male
what primordial leaf absorbs the endosperm on monocots
cotyledons
what is the tough outer casing that covers the first shoot of a monocot
coleoptile
what kind of light germinated lettuce seed
red
what pigment is responsible for germination in lettuce
phytochrome, convertible between two forms
what is the name of the pigment found in phytochrome
phycobilin
what substance causes sugars to be secreted from endosperm
aleurone
what substance activates seed germination
gibberlin
what substance activates root and and stem elongnation
Indoleacetic acid (IAA)
what cytokinin activate
cell division
what are photoperiod controls
when a plant will only flower once the daylight hours are longer or shorter than a critical period
will Far Red light cause floweringin SDP
yes
Will far red light cause flowering LDP
no
Does Pfr stimulte LDP flowering
yes
what does ethylene do
maturation of fruits, and drop leaves
what is Abscissic acid (ABA)
dormancy hormone that will limit bud activity in winter and fall
