Cell Types, Tissues, & Mitosis
What is the lumen?
Empty part in the middle of a sclerenchyma cell where the organelles used to be!
In what region is the most mitosis taking place?
Region of Cell Division
What is the leaf arrangement when there is 1 leaf per node? 2 leaves per node?
1/node - alternate arrangement
2/node - opposite arrangement
Name & describe the 3 margin types
entire - smooth edges
dentate - serrated edges
crenate - curvy edges
What is the top layer of the leaf? the bottom layer? (not epidermis)
TOP= palisade mesophyll (palisade parenchyma)
BOTTOM= spongy mesophyll (spongy parenchyma)
What is the middle lamella and what does it do?
It is a pectin layer between cells that cements them together for stability and lets them form plasmodesmata
This results in an increase in thickness in woody plants
Secondary Growth
one of many raised pores in the stem of a woody plant that allows gas exchange between the atmosphere and the internal tissues.
Lenticels
the stalk that joins a leaf to a stem
Petiole
State the photosynthesis summary equation
CO2 + H2O > Sugar + O2
Carbon & Water > Sugar & OxygenWhat do Vessel Elements have that Tracheids lack?
A perforation plate!
This produces protoderm, Ground meristem, and procambium.
Root Apical Meristem
the region in the growing shoot containing meristematic cells
Shoot Apical Meristem
Describe a simple leaf vs compound leaf
simple leaf - only one leaf, no leaflets (secondary leaves)
compound leaf - many leaflets per leaf
Cells in the central part of leaf that use turgid pressure to move leaf
Bulliform Cells
Name all stages of Mitosis with a quick description of each step.
Prophase
Metaphase
Anaphase
Telophase
What secondary meristem forms secondary xylem & phloem?
Vascular Cambium
A small mark on a leaf scar indicating a point where a vein from the leaf was once connected with the stem
Vascular bundle scar
what is a small leaflike appendage to a leaf, typically borne in pairs at the base of the leaf stalk.
Stipule
This cell forms a protective covering on leaf veins, and consist of one or more cell layers, usually parenchyma.
Bundle Sheath
I am the enlarged form of plasmodesmata and can be found at the ends of certain specialized cells. What am I? And what cell am I found in? hint: I am in an alive cell
Sieve Plates (Sieve Tube Elements)
Which secondary tissues arise from Cork Cambium
Periderm* or..
out - Cork
in - Phelloderm
the area in the center of a stem within the vascular bundles
pith
sessile (leaves)
a plant that needs very little water
xerophyte