Test 2 cont. Flashcards
What is Venation?
the way leaf veins are organised in a leaf
the first initial vein in a leaf is called what?
the midrib
the midrib can consist of ______ Vascular bundles?
Multiple (3-5)
leaf veins are primarily made up of what?
Tracheary elements
Grass leaves have ______ Vennation
parallel
what is a C3 Plant?
a plant that is best at fixing carbon dioxide
what is a C4 Plant?
plants that are better at holding and conserving water
C__ cells have a bundle sheath
3+4
what is Kranz Anatomy?
a bundle sheath with WREATH CELLS and no spongy mesophyll
kranz anatomy has evolved in at least ___ Families
10
what are transfusion tracheids?
tracheadis that move water from the vascular bundle to the leaf
what is a hypodermis?
an epidermal layer under the epidermis
what is the identifying factgor of a resin canal?
the epithelial cells that surround it.
T/F Pine Needles have a Vascular cambium
True
what are hydathodes?
pores that allow for the release of water
what is the purpouse of hydathodes?
to reduce embolism
what are bulliform cells?
motor cells of the plant
bulliform cells are on what side of the leaf?
the adaxial side
how do bulliform cells work?
when they fill up with water they push out and unfold the leaf, when the water is lost they deflate/compress and curl up the leaf
what are root nodules?
little balls of tissue in the root that house rhysobium
bud scales are housing what?
The shoot apical meristem
the creation of a leaf trace is a part of which process?
what is the difference in shade leaves and sun leaves?
location, and size
shade leaves are ______ and sun leaves are_____.
large, small
stomata occur on all ____ parts
areal
stomata usually refers to what?
pore and gaurd cells
how do stomata work?
with the presence of water the stomata inflates keeping it open for gas exchange. when water leaves they deflate and close
Eudicot (and some monocot) gaurd cells have what unique structure?
ledges
leafs can be these -stomatic
amphistomatic, epistomatic, and hypostomatic
what is an amphistomatic leaf?
a leaf with stomata on both sides
what is an epistomatic leaf?
a leaf with stomata on the adaxial surface
what is a hypostomatic leaf?
a leaf with stomata on the abaxial surface
