Chapter 10 Flashcards
The root systems of grasses that consist of many nearly equal sized roots
fibrous root systems
A region on a stem where a leaf is or was attached
node
If a plant’s guard cells malfunctions,
the plant might suffer excessive water loss
In an opposite leaf arrangement,
two leaves are attached at a node
The exchange of gases in the woody areas of plants takes place through tiny openings in the bark
lenticels
To control their own growth, plants produce ________
hormones
The passage of water vapor out of the leaf through the stomata
transpiration
The study of plants
botany
Plants
- are eukaryotic
- are producers
- have cell walls
An annual growth ring is composed of
springwood and summerwood
A component of plant cell walls
cellulose
Caused by the presence of water inside plant cells
turgor pressure
A chloroplast is an example of this
plastid
A collection of xylem
wood
Transports a sugar solution
phloem
Arrangements of xylem and phloem in leaves and in nonwoody plants
vascular bundles
The outermost tissue of leaves, young roots, and young stems
epidermis
The outer covering of a woody plant
bark
Carries water from the roots to the leaves
xylem
Special pigments that control a plant’s response to light
phytochromes
Growth away from a factor
negative tropism
Reversible, repeatable plant movements
nastic
A growth response to gravity
gravitropism
A growth response to light
phototropism
Plants that bloom when nights are long
short-day plants
A response to the length of time exposed to light
photoperiodism
Stems that are hard and not flexible
woody stems
This is a growth region in plants
vascular cambium
A plants stem exhibits this
negative gravitropism
A type of plant hormone
Auxin
The closing of a Venus flytrap is an example of _______ movement
nastic movement
Mastic movements are caused by changes in _________ ________
turgor pressure
These are located on the underside (bottom) of leaves
stomata
When a tree has been girdled, food (sugar) cannot be transported to the bottom of the tree because the _________ has been removed
phloem
