Stems Flashcards
What is a primordium?
Protects the shoot apical meristem
What primary meristem separates the ground meristem into two regions in the stem?
Pro cambium
What is the function of a meristem?
Creates, grows, and transports many identical cells and differentiates as needed.
Besides the stem tip, where else are apical meristems located?
The root
What is the primary function of apical meristems?
House juvenile tissue
How does the cell size change as you progress from the zone of cell division to the zone of maturation?
The cells get larger
Are other changes in cell appearances visible?
Yes, then nucleus takes up more space in the cell during division and is less condensed in later stages.
What tissue type is in the epidermis stem region?
Epidermis
What tissue types are present in the cortex region of the stem?
Parenchyma, collenchyma
What tissue type is presenting n the vascular bundle region of the stem?
Xylem, phloem, and sclerenchyma
What tissue types are presenting the ray regions of the stem?
Parenchyma
What tissue type is present in the pith region of the stem?
Parenchyma
How are the vascular bundles arranged in the stem of dicots, such as coleus?
Vascular bundles are arranged in circles
What cells are found in the epidermis tissue
Epidermis
What cell types found in collenchyma tissue?
Collenchyma
What cell type is present in parenchyma tissue
Parenchyma
What cell type is present in sclerenchyma tissue?
Sclereids and fibers
What cell types are present in phloem tissue?
Sieve tube elements and companion cells and phloem parenchyma.
What cell types are found in xylem tissue?
Tracheids
Vessel elements
Xylem parenchyma
What features are characteristics of a collenchyma cell?
Small cells
Thick cell walls
Is the collenchyma located between the ribs, or on the ribs that run length wise on the celery petiole
On the ribs
What can you infer is the function of parenchyma cells?
Cortex support
When you eat a pear there is often a griddy substance in this type of fruit. What cell type do you expect causes the grid?
Sclereids
In the white flesh of the pear which chemical compound doyl u suspect causes the grid?
Lignins