Sunday, April 22, 2012

well due to my lack of green thumb (and some accidental use of oxyclean in the water system) all my plants have died and are not photo ready
This above plant was adopted from Zach
notice the reaction to the stimulus of sunlight which is a tropism
hormones involved include auxin which controls the behavioral process like the above tropism is controlled through
ABA better known as abscisinII and dormin is a plant hormone is key in many developmental processes
vascular and cork cambium is usually found as part of the periderm it has lateral meristem(tissue based on undifferntiated cells) and is used for secondary growth
Primary growth is the length in roots and stems whereas secondary growth involves the vascular and cork cambium this involves an increase in girth which is why the additional structure is found in dicots and very rarely in monocots

Food and nutrient supplier

turgor pressure-caused by the osmotcic pressure of water, pushing the plasma membrane against the cell wall of plants keeps plant stem up and rigid
vascular tissue-food and water transfer system
xylem-long trachery cells transfer water and nutrients through plant and replaces whats used in photosynthesis and cellular resperation
stomata-pore used for gas exchange CO2 in H2O vapor out
soil sontributes to plant growth by supplying nitrogen and retaining water which is critical for growth and development physical support is also useful
casparian strip useful for forcing water into living cells
minerals then can be carried by xylem through osmosis
Food delivery is another story however...
Translocation through the pholem-living tissue that carries nutrients and glucose through its sieve cells actually move the food while companion cells tell it where to go

reproduction

stamen-pollen producing reproductive organ of a flower
carpel-ovule and seed producing organ
petals- modified leaves to hold the reproductive organs
pollen- sperm cells of a plant/ tranfered to ovule(female gametophyte
double fertilization -joining a female gametophyte with 2 male gametes

plant cycle



 First, the the plants alternate in each generation. They all for the most part are tracheophytes which are vascular plants. Meaning they have vascular tissue as opposed to bracheophytes The sporophyte produce spores. It also uses meiosis to make the spores. This is the only time that meiosis is used in the life cycle. Then the spore grows into the Gametophyte. This process by mitosis is still haploid. This generation is the sexual generation. The gametophyte makes gametes. This forms a zygote. Then the cycle repeats.

young plant structure and function

terminal bud-an undeveloped or embryonic shoot found located at the tip of a stem
nodes- holds the bud
bud-embryonic shoot
cotyledon-a seed leaf from an angiosperm embryo
adventitious/tap root-enlarged root that grows vertically downward
primary/lateral root- extend from primary to anchor plant
root hairs- tubular outgrowth used to extract nutrients
leaf-organ of vascular plant
cuticle-waxy protective coloring

key structures



these are the structures that are key to young plants

germination

my babies are hatching?no they are germinating or sprouting out of their seeds and beginning to grow
such factors as water oxygen light, dark, or temperature can affect this process
a lot of water is needed to start of the process then less is needed
oxygen is needed for aerobic reperation
formula: O2+C6H12O6.->6CO2+6H20
temperature affects the above factor
imbibition is a displacement in liquids which in this case would be water