Lab 1 Plant complex tissue Flashcards
(20 cards)
sieve tubes
located in the phloem
long think cells that are responsible for sugar and other nutrient transport (source to sink)
translocation
(phloem)
the process of transporting organic nutrients and sugars in the phloem of vascular plants
companion cells
maintain the cytoplasm plasma membrane of sieve tube elements
they connect source and sink cels to sieve tube cells for sugar transport
transpiration
(xylem)
evaporation of water from the leaves of plants
what are transpiration water movement?
- water vapor diffuses out of leaf
- water vapor evaporates inside leaf
- negative pressure pulls water out of xylem
- negative pressure pulls water up the xylem
- positive pressure pushed water out of root
- concentration gradient transports water from soil to root
xylem
vascular tissue that carries water upward from the roots to every part of a plant
phloem
vascular tissue in plants that conducts sugar and other metabolic products up and down the plant
what parts make up the xylem?
vessels and tracheids fibers
what parts make up the phloem?
sieve tubes and companion cells
describe vessel elements?
short wide, have less/no taper at ends
describe tracheids?
long, thin cells that overlap and have tapered at the end
source cells
cells in plant tissue where sugars are made
sink cells
cells in plant tissue where sugar are to be used or stored
active transport in translocation
from source cells to companion cells
what is the ideal conditions for transpiration?
(plants losing water vapor)
windy conditions because the wind removes water vapor from around the leaves, maintaining a drier environment and promoting further transpiration.
describe monocot stem
vascular bundles scattered
describe dicot stem
vascular bundles are in a ring
describe monocot root
vascualr bundles in center ring
