Parts of the Shoot Apical Meristem Flashcards
The two zones of tunica and corpus found in the shoot apical meristem are most commonly located in what type of plant?
Angiosperms (a.k.a. flowering plants)
What are the two distinguishable zones of the shoot apical meristem?
- Tunica
2. Corpus
Tunica is the _________ row(s) of initials in the S.A.M.
Outermost
How many rows of tunica cells are there?
1 to 3 rows
In tunica cells only _________ cell divisions occur.
Anticlinal
New initials are formed at the _________ of the S.A.M that soon can contribute to formation of ___________ and axillary buds.
Flanks, leaf primordia
As new initials are forming, the tunica cells still allow the __________ to be protected.
Corpus
The corpus is the?
Largest, and more central region of initials of the S.A.M.
The corpus predominately only contains ____________ divisions?
Periclinal
Periclinal division in the corpus allow what to happen?
The corpus is maintained while still producing derivates below the corpus that will eventually differentiate at the interior of the stem to become cells of the pith
Periclinal cell division aids in what type of growth for the plant?
Primary growth, it adds height (vertical)
Anticlinal cell division
The newly formed primary cell wall forms perpendicular to the reference surface (90 degrees)
Periclinal cell division
The newly formed primary cell wall forms parallel to the reference surface