Transport in the Phloem
Xylem/Transpiration
Movement&root pressure
General
Mixed transport
100
This is the mechanism that transports sucrose and organic material through the phloem of the plant
Translocation
100
What is transpiration
Transpiration is the evaporation of water on the surface of the leaf
100
The process of osmosis acts between concentration gradients from a concentration of...
low to high
100
The phloem is a tissue that transports sugar from the leaves to the roots underground which is the opposite of the....
Xylem
100
A fungicide dissolved in water was applied to the soil in which a rose plant was growing. It later appeared in the leaves. How did the fungicide reach the leaves?
A. Movement up a water potential gradient
B. Transpiration pull in xylem
C. Translocation in phloem
D. Facilitated diffusion
B. Transpiration pull in xylem
200
Translocation always moves dissolved sugar from glucose to _____ then stores it as starch
Sucrose
200
This percentage of water is evaporated during transpiration
90%
200
This is the proper term for the diffusion of water molecules and particles across a membrane?
Osmosis
200
What is the name of the structure that provides sugar to sieve tubes in the phloem?
Companion cell
200
Name four waste products excreted by plants
Oxygen, carbon dioxide, Calcium oxalate and tannin
300
In what is the term used for the xylem and phloem collective
Vascular bundle
300
what kind of pressure is needed for water to be drawn up the stem of a leaf
Root pressure
300
Why does transpiration decrease when there is an increase of humidity
Because the plant is gaining water instead of losing water
300
Why does the root hair cell has a long appendage like structure attached to it
To increase surface area for the absorption of water and mineral salts
300
In a plant, what tissue(s) is/are specially adapted to transport sucrose?
D
400
The phloem tube is lined with what?
Lignin
400
What are the factors that causes an increase of Transpiration?
Temperature, sunlight, and wind speed
400
Finish the statement
When a water solution has a high concentration of solutes......
the concentration of water molecules is low
400
What colour would a plant be after testing to starch, if the plant is negative for starch
Yellow brown color / color of the reagent used
400
Which letter identifies phloem?
B
500
Xylem vessels transport water and mineral salts by the process of osmosis and active transport, how does the xylem receive energy for active transport when it is made of dead tissue?
Through aerobic respiration
500
These three main factors play a role in the cohesion-tension model in regards to water uptake through the xylem vessel
Transpiration, cohesion and adhesion
500
This causes more volume to move in through osmosis
High amount of solutes in the xylem
500
What process is used to describe the removal of the phloem tube from the bark of plant
Ringing
500
What will happen to the guard cells and stomata during the following condition:
when humidity has increased
when temperature, windspeed, and sunlight increased
Humidity increased- stomata will open, guard cell will become turgid
temperature, windspeed, and sunlight increase- stomata will close, guards will become flaccid