Exam 2

Question 1

Water evaporates out of ____ stomata to ____ atmosphere, creating water differential and tension on the water column

Answer 1

Open

Drier

Question 2

Water enter through root hair via ____ due to ____ soil solution relative to the root hair

Answer 2

Osmosis

Hypotonic

Question 3

____ gradient from ____ cells all the way back to xylem, draws water from the vein

Answer 3

Water potential

Mesophyll

Question 4

Water passes through endodermis being forced to move ___ due to casparian strip; solution ____ by Plasma membrane, helping to prevent embolism and foreign invasion

Answer 4

Symplastically

Filtered

Question 5

Water pulled up stem under ____ in an unbroken column; water remains unbroken due to ____ of water molecules

Answer 5

Tension

Cohesion

Question 6

Water column in ____ does not get pushed back down by gravity due to ___\ to vessel walls

Answer 6

Xylem

Adhesion

Question 7

The above process are part of the

Answer 7

Cohesion tension theory

Question 8

1. Assimilate / photosynthesis loaded into ____ with help of ____ from source

Answer 8

Sieve tube elements, companion cells

Question 9

The sieve tube elements ___ osmotic concentration; thereby, ___ water potential in sieve tubes

Answer 9

Increasing

Decreasing

Question 10

Water enters sieve tube elements from xylem due to water ____, creating ___

Answer 10

Potential differential

Turgor pressure

Question 11

____ moves by _____ to nearest / strongest sink and is unloaded

Answer 11

Photosynthate

Bulk flow

Question 12

1 above process is called

Answer 12

Pressure flow hypothesis

Question 13

• water evaporates out of open stomata to drier atmosphere creating

Answer 13

Water potential difference

Question 14

Water enters through root hair via

Answer 14

Osmosis due to hypotonic soil solution

Question 15

Water passes through endodermis filtering solution

Answer 15

Preventing embolism and foreign invaders

Question 16

Water potential gradient from mesophyll cells all the way back to

Answer 16

Xylem draws water from vein

Question 17

Water pulled up stem under

Answer 17

Tension, in an unbroken column

Question 18

Water remains unbroken due to

Answer 18

Cohesion of water molecules

Question 19

Assimilate photosynthate loaded into sieve tube elements

Answer 19

With help of companion cells from source

Question 20

Increases osmotic concentration

Answer 20

Decreases water potential in sieve tube

Question 21

Water enters sieve tube from xylem due to water potential differential creating

Answer 21

Turgor pressure

Question 22

Photosynthate moves by

Answer 22

Bulk flow to nearest strongest sink and is unloaded