M5 LESSON 2

Question 1

• function of vascular tissues
• mechanisms involved are either diffusion or osmosis

Answer 1

PLANT TRANSPORT PROCESS

Question 2

transports WATER AND MINERALS
Process: TRANSPIRATION STREAM

Answer 2

XYLEM

Question 3

transports SUCROSES AND AMINO ACIDS
Process: TRANSLOCATION

Answer 3

PHLOEM

Question 4

MOVEMENT OF MOLECULES OR IONS from a region of HIGH concentration to
a region of LOW concentration

Answer 4

DIFFUSION

Question 5

Diffusion Gradient of movement from HIGH to LOW

Answer 5

MOVING ALONG THE DIFFUSION GRADIENT

Question 6

DOES NOT INVOLVE the use of energy

Answer 6

PASSIVE TRANSPORT

Question 7

Diffusion Gradient of
movement from LOW to HIGH

Answer 7

MOVE AGAINST THE DIFFUSION GRADIENT

Question 8

diffusion with a HELPER PROTEIN

Answer 8

SIMPLE DIFFUSION

Question 9

utilizes helper proteins, e.g. channel and CARRIER PROTEINS

Answer 9

FACILITATED DIFFUSION

Question 10

Rate of Diffusion is affected by

Answer 10

TEMPERATURE OF THE ENVIRONMENT
DENSITY OF DIFFUSING MOLECULE
MEDIUM OF DIFFUSION
CONCENTRATION GRADIENT

Question 11

DIFFUSION OF WATER across a semi-permeable membrane

Answer 11

OSMOSIS

Question 12

water moves from an area where water is HIGHLY CONCENTRATED to an
area where water is LOW CONCENTRATED

Answer 12

OSMOSIS

Question 13

measure of the potential of water to move from one cell to another as influenced by solute concentration

Answer 13

OSMOTIC POTENTIAL

Question 14

CONCENTRATION OF SOLUTES on either side of the membrane

Answer 14

TONICITY

Question 15

TURGID CELL (normal), water concentration is LOWER in the
cell; OUT TO IN

Answer 15

HYPOTONIC

Question 16

FLACCID, water moves in and out

Answer 16

ISOTONIC

Question 17

PLASMOLYSED (shrinked), concentration of water is higher outside the cell; waters MOVES OUTSIDE

Answer 17

HYPERTONIC

Question 18

EXERTED PRESSURE by the cell’s fluid content against the cell wall

Answer 18

TURGOR PRESSURE

Question 19

• SWELLING OF TISSUES often to several times their original volume
• INITIAL STEP in the germination of seeds

Answer 19

IMBIBITION

Question 20

• UPTAKE OF MINERALS or ions into the ROOT HAIR CELLS, an example of active
  transport
• movement of molecules AGAINST THE CONCENTRATION GRADIENT

Answer 20

ACTIVE TRANSPORT

Question 21

plant transport water through xylem

Answer 21

WATER MOVEMENT

Question 22

water moves through plants by a combinations of two factors:

Answer 22

adhesive and cohesive properties of water
transpiration

Question 23

attraction between water molecules due to their HYDROGEN BONDS

Answer 23

COHESION

Question 24

attraction between water and other substances

Answer 24

ADHESION

Question 24

- movement of water through the plant depending upon the rate of transpiration - PULLS THE WATER UP through the plant

Answer 24

TRANSPIRATION

Question 25

Factors Affecting Transpiration Rate

Answer 25

HUMIDITY WIND TEMPERATURE LIGHT

Question 26

causes transpiration to be DECREASED

Answer 26

HUMIDITY

Question 27

INCREASES EVAPORATION and thus transpiration; wind removes water vapor around leaves, increasing transpiration

Answer 27

WIND

Question 28

generally causes an INCREASE IN THE RATE OF TRANSPIRATION; STIMULATES THE OPENING OF THE STOMATA

Answer 28

LIGHT

Question 28

INCREASES EVAPORATION and thus transpiration

Answer 28

TEMPERATURE

Question 29

plants transport food through their

Answer 29

PHLOEM

Question 30

the ultimate “source” of sugars for plants is the ______, as they store sugars and are greatly utilized during the growing season

Answer 30

ROOT

Question 31

- explains the movement of sugars through a plant phloem-loading - H+ ions activity transported out of phloem cell; High H+ ion conc. builds up outside the cell - H+ ions flows back into the cell, energy is released to facilitate entry of sucrose

Answer 31

PRESSURE-FLOW HYPOTHESIS