Lecture 21: Shoot Development Flashcards
photosynthesis, transpiration, transport and reproduction are all jobs done by ____
leaves/stems (shoots!)
is a stem an organ?
yes
___ are where leaves attach
nodes
___ are between leaves
internodes
___ has the potential to form lateral shoot/branch
axillary bud
____ is responsible for the elongation of a young shoot
apical bud
____ is when a plant can only grow tall, not wide
apical dominance
are the cells in SAM differentiated?
no, they differentiate outside of the SAM
leaves are initiated by the activity of the ____
SAM
____ intercept light, exchange gases, dissapate heat, defend plants (chemically, waxy substances, spines)
leaves
what does a typical leaf consist of?
flattened blade and stalk (called a petiole)
a _____ is not divided into leaflets
simple leaf
a ____ is a leaf that is sub-divided into leaflets
compound leaf
what is a pinnate leaf?
a compound leaf where all the leaflets are attached to the petiole
what is a palmate leaf?
a compound leaf where all the leaflets connect to a central location
____ have two guard cells
stomata
where are stomata located?
on the bottom of leaf
what do stomata do?
exchange gases and water
________ transporters control opening/closing of stomata
potassium-ion transporters
what is the ground tissue in a leaf?
mesophyll
what are the two kinds of mesophyll?
spongy mesophyll (lower half)
palisade mesophyll (upper half)
each vein ina leaf is protected by a ______
bundle sheath of vascular tissue
_____ have parallel leaf veins
monocots
