Plant Transport

Question 1

Xylem cell types

Answer 1

Vessel element
Tracheid

Question 2

Vessel elements xylem cells

Answer 2

Short
Perforation plates

Question 3

Tracheid xylem cells

Answer 3

Elongated
No perforation plates

Question 4

Proton pumps

Answer 4

Pumps protons

Question 5

Symport

Answer 5

Have sucrose and protons in the same direction at same time

Question 6

Osmosis/diffusion

Answer 6

Move down concentration gradient

Question 7

Coupled transport

Answer 7

When proton pumps and symport used together

Question 8

Root and soil

Answer 8

Roots have low h20 and high minerals
Soil has high h20 and low minerals

Question 9

How are ions and minerals moved into roots

Answer 9

Active transport

Question 10

How is water moved into xylem?

Answer 10

Osmosis

Question 11

Ways to get water into xylem

Answer 11

Ampoplast route
symplast route
Transmembrane route

Question 12

Ampoplasts route

Answer 12

Water goes into xylem Through cell wall

Question 13

Symplast route

Answer 13

Water enters xylem through plasmodesmata

Question 14

Transmembrane route

Answer 14

Water enters xylem through cell wall membrane tissue

Question 15

Transpiration

Answer 15

Evaporation of h20 out of stomata

Question 16

What h20 transport is dominant

Answer 16

Transpiration

Question 17

How does root pressure push water

Answer 17

Stomata closes at night
Osmosis occurs

Question 18

Guttanation

Answer 18

H2O leaking out of plant tissue

Question 19

How does water leave roots

Answer 19

water leaving roots → root pressure drops → low guttanation

Question 20

How water enters roots

Answer 20

Water enters root → root pressure rises → high guttanation

Question 21

Parts of stomata

Answer 21

Guard-cells
Stoma
Vacuole

Question 22

Guard cells

Answer 22

Controls the opening and closing of stomata
Thick cell wall on inside
Thin cell wall on outside

Question 23

Stoma

Answer 23

Opening on the inside of stomata

Question 24

How stomata opens

Answer 24

Guard cells become hypertonic and water flows inside
Vacuoles fill and guard cells flex outward
Stomata opens
Ions go out of guard alls through facilitated diffusion

Question 25

Adaptations to dry climate

Answer 25

Close stomata at night
Stomata on bottom leaves so sunlight doesn’t reach it
Trichomes on leaves reflects sunlight

Question 26

How sucrose is made

Answer 26

Glucose + fructose → sucrose

Question 27

How is sucrose transported

Answer 27

Through phloem - can go up and down

Question 28

Sieve tubes

Answer 28

In phloem
Plasmodesmata in between tubes

Question 29

Sucrose source

Answer 29

Where sucrose comes from

Photo synthesis in leaves

Question 30

Sucrose sink

Answer 30

Where sucrose goes
Stored in roots and can be sent back to buds to make new leaves

Question 31

Pressure - flow model steps

Answer 31

1. Sucrose pumped into phloem at source ( coupled transport)
2. Osmosis causes turgor pressure in phloem to increase
3. Sucrose flows from high pressure source to low pressure sink through phloem
4. Sucrose pumped into sink by active transport low conc. To high conc.)
5. Water exits phloem by osmosis -lowering turgor pressure in sink
6. Water enters xylem in sink
   End result: high turgor pressure in phloem in source; low turgor pressure in phloem in sink