Study Set Content:
Acts as gravity sensors collecting on the sides of root cap cells facing the direction of gravitational force
Amyloplasts
What composes the region of cell divison
Apical meristem
Where is the apical meristem located
Center of the root tip
Most of the cell division takes place in?
Next to the root cap at the edges of the inverted cup zone
When does the cell divide
Every 12-36 hrs
What is the frequency of division in the base of the meristem
200-500 hours
The division are often what?
rhythmic
They usually reach a peek how many times
Once or twice each day
This peek usually happens in
noon or midnight
describe the cells in the region of cell division
Cubical, with relatively large, more or less centrally located nuclei and few very small vacuoles
Gives rise to the outer layers of the cell
Protoderm
to the inside of the protoderm, produces parenchyma cells of the cortex
Ground Meristem
appears as a solid cylinder in the center of the root
Procambium
produces primary xylem and phloem
Procambium
what does the Ground meristem produce
parenchyma cells of the cortex
outer layer of the cells
epidermis
originates from the ground meristem, generally present in stems but absent in most dicot roots
Pith(parenchyma) Tissue
merges with the apical meristem that extends about 1cm or less from the tip of the root
Region of Elongation
the tiny vacuoles merge and grow until one or two large vacuoles occupy up to (blank %) of the cell
90%
what part are the only ones pushing through the soil
Root cap and apical meristem
