plants and medicine final examn Flashcards
(49 cards)
What colors do chlorophyll a and b absorb
absorb all colors but green
what colors do carotenoids reflect?
yellow, orange, and red
when can you see carotenoids
when chlorophyll dies in the fall
meaning of anthocyanins
Anthos: flower
Kyanos: blue
is anthocyanins soluble or insoluble
soluble (it has oh groups (polar)) and 3 benzene rings
what is light screen hypothesis
anthocyanins shade chlorophyll from excess light
what is photoinhibition
decline in photosynthetic capacity of chlorophyll
what causes photoinhibition
temp drops
decreased moisture and lack of nutrients
where are anthocyanins found?
found in upper epidermis and upper palisade
How is anthocyanin production in foliage (plant leaf) caused?
environmental stress
low temp
drought
low nutrients
Trees farther up north have more what
anthocyanins
Interpret into your own words: progression of leaf senescense (leaf dying) is most commonly monitored as chlorophyll degradation
as leaf dies, chlorophyll also starts to die
what does the word irradiance mean
sun
scientific name for eastern white pine
pinus strobus (NEEDLES IN A CLUSTER)
how many needles does eastern white pine have
5
scientific name for short leaf pine
Pinus echinata: two needles (fasicicle) needles are longer than 2 and a half inches (CLUSTERS)
scientific name for picea abies
norway spruce
Square, short, sharp needles on a peg
scientific name for eastern hemlock
tsuga canadensis
FLAT LEAVES, attachment on cushion (0.3-0.7 inches long)
scientific name for yew tree
taxus species
not a fir
FLAT leaves
aril
scientific name for bald cyprus
taxodium species (deciduous leaves) flat LEAVES
scientific name for eastern red cedar
juniperus virginiana
dioecious, and has ovulate cones
for juniperus virginina, there are two types of leaves
immature and mature… how do you tell them apart?
immature is way more spiker than mature
what does gymnosperm mean
cone bearing, evergreen, with needles
what is a monoecious plants
plants have both female and male parts