Midterm 2 - Plant Structure and Growth Flashcards
1
Q
dendritic form
A
- branched extension of a nerve cell
- propagates the electrochemical stimulation
2
Q
plant cell walls
A
- specialized form of extracellular matrix
- tough, rigid structure
- primary and secondary
3
Q
lignin
A
- complex organic polymer
- wood
4
Q
cheap growth
A
- vacuole takes up water
- absorbing water = less time consuming/cheap
5
Q
vacuole
A
- in cytoplasm
- hold materials for storage, excretion, or digestion
6
Q
shoot system
A
- aboveground portion of the plant
- nonreproductive plant parts (leaves and stems)
- reproductive parts (flowers and fruits)
7
Q
stem
A
- structural axis of plant
- green and photosynthetic
- modified: potato
8
Q
leaves
A
- usually for photosynthesis
- modified: spines (cactus), tendrils (peas)
9
Q
roots
A
- anchorage
- absorption of water and minerals
- food storage
10
Q
modular development
A
- one module
- leaf + axillary bud + internode
11
Q
plastic development
A
- respond to plant’s experiences
- flexible growth responses
- sense stress (wind)
11
Q
ground tissue system
A
- photosynthesis
- provides support
- stores water and sugars
12
Q
vascular tissue system
A
- xylem and phloem
- transports food and water throughout plant
13
Q
xylem
A
- vascular tissue
- conducts water up plant
- physical support
14
Q
phloem
A
- conducts a sugar solution in all directions around plant
