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Plant Anatomy
Chs 35; Unit 8: Plants
20
Biology
12th Grade
02/27/2011

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Term
Role of roots
Definition
take in water
absorb nutrients
anchorage
store starch
Term
a tap rot is found in plants like carrots, which are:
Definition
dicots
(one large main root)
Term
fibrous roots are found in:
Definition
monocots
(smaller, thinner)
Term
Root Hairs:
Definition
increase surface are for young plants
Term
prop roots:
Definition
help top heavy plants stand up (corn)
Term
modified roots
Definition
storage, aerial, air, buttress
Term
role of stems and shoots:
Definition
support leaves
water transport
store starch
Term
modified stems
Definition
rhizomes (reproductive- below ground)
stolons (above ground)
bulbs and tubers (store starch)
Term
Role of buds, different kinds
Definition
where plants grow
terminal: at end/top
axillary: in notch where leaf connects with stem- has potential to grow into a whole branch
Term
Role of leaves
Definition
photosynthesis/food production
gases exchanged: CO2 and O2
transporation (loses water)
Term
modified leaves
Definition
tendrils
spines
storage
reproductive
bracts (function as petals-pointsettia)
Term
Types of tissues
Definition
dermal
vascular
meristematic
ground
Term
Plant cell types
Definition
epidermal
parenchyma
collenchyma
sclernechyma
water conducting
sugar conducting
Term
Ground tissues are:
Definition
parenchyma
collenchyma
sclerenchyma
Term
Parenchyma
Definition
most common cell
where photosynthesis occurs
only primary CW
Term
Collenchyma
Definition
support cell
only a thicker primary CW
Term
Sclerenchyma
Definition
thick secondary CW
stems
Term
Water conducting/Xylem
Definition
trachieds/vessels
long cells
both CWs
dead when functioning: hollow tubes
Term
Sugar conducting/Phloem
Definition
Sieve and companion cells
alive when functioning- only cytoplasm
sugar diffuses thru Cyto.
Term
companion cells
Definition
nest to sieve tube: does protein synthesis
allows for communication
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