Lecture 6: Plant Body (Primary and Secondary Structures) Flashcards
1
Q
Taproot system
A
one main thickest root
branches are thinner
2
Q
fibrous root systen
A
many branches of equal or similar thickness
3
Q
wide branching
A
short internodes
most likely to be bushy
4
Q
narrow branching
A
long internodes
most likely to be tall and slender(man)
5
Q
stomates
A
- modification of epidermal cells
- opening of them is controlled by hydrostatic pressure of guard cells
- they absorb water (guard cells turgid) during the day and open for gas exchange
- at night, the guard cells flaccid and the factory shuts down
6
Q
stipules
A
green like structure that leaves are attached to stem by
- modified into tendrils or spines
7
Q
Apical Meristem
A
- cause primary growth and increases the length of the shoot root
8
Q
lateral meristem
A
PERMANENT
ex. cambium
- produce xylem towards inside and phloem towards outside (increase diameter)
9
Q
temporary meristem
A
produce organs with finite size, such as leaf and flower parts
- they loose their meristem character when the organ reaches its full size
10
Q
Root structure
A
cell division, elongation, maturation
11
Q
stamen
A
anther + filament
12
Q
carpel
A
stigma + style + ovary
