STEM Flashcards
is one main stem with smaller stems branching from it
functions in support of leaves, flowers and fruits.
serves to conduct water and dissolved mineral salts upward and to transport food materials downward.
stem
responsible for the growth in length of stems. The tip retains its capacity for meristematic growth and also gives rise to leaves.
shoot tip
In this section of a shoot tip, the central dome or crest of cells near the top of the section is the
apical meristem
apical meristem flanked by two partly developed outgrowths
is a leaf in its initial growth stage. It originates from dividing subsurface cells on each side of the apical meristem.
leaf primordia
These cells divide faster than those in the center of the dome and consequently the young leaves grow and extend upward beyond the stem apex.
true
The outermost layer of the apical meristem produces the epidermis, called the
protoderm
Another meristem layer produces the ________ appears as two narrow, darker traces of longitudinally elongate cells.
procambium
develops into the xylem and phloem.
procambium
The central portion of the stem is known as the
pith
The region between the procambium and the epidermis is known as the
cortex
Both the pith and the cortex develop from the
ground meristem
Just like in the exercise on roots, the primary tissues in stems can be classified into the
dermal tissue system, the vascular tissue system and the fundamental tissue system.
in young stems contains parenchyma tissue and clusters of collenchyma tissue which functions for plasticity in stem support.
cortex
are also formed to provide resilience and support to the stem. These _____ tissues are usually adjacent to the conducting tissues.
sclerenchyma
are found in almost all plants. These are usually on the undersurface of leaves and on the young herbaceous stems.
Trichomes
