Medullary rays are tissues made up of
phloem parenchyma
xylem parenchyma
sieve tube
sclerenchyma
B.
xylem parenchyma
Medullary rays are the vertical plates of parenchyma cells running radially through the cylinder of vascular tissue in the stems and roots of plants. Each may be one to many cell in width.
Primary medullary rays occur in young plants and in those not showing secondary thickening. They pass from the cortex to the pith.
Secondary medullary rays are produced by the vascular cambium and terminate in xylem and phloem tissues. Medullary rays store and transport food materials.
Interfascicular cambium develops from the cells of
medullary rays
xylem parenchyma
endodermis
pericycle
Age of a tree can be estimated by
its height and girth
biomass
number of annual rings
diameter of its heartwood
Portion of apical meristem that gives xylem tissue is called
protoxylem
procambium
metaxylem
tracheid
One of the characteristic of sieve tube is
it is a part of phloem
function is transport of inorganic solutes
it is dead cell
sieve plate is not present
In the following pairs, where do you get lignin in both the element?
Tracheid and collenchyma
Sclerenchyma and sieve tube
Sclerenchyma and trachea
Parenchyma and endodermis
Interfascicular cambium is a
primary meristematic tissue
primordial meristem
type of protoderm
secondary meristematic tissue
