Transport and Circulation in Plants

Question 1

three routes of water movement in plant tissues

Answer 1

apoplast route
symplast route
vacuolar route

Question 2

water movement through cell wall

Answer 2

apoplast route

Question 3

water movement through cytoplasm that is normally hindered by resistance caused by cell organelles and membranes

Answer 3

symplast route

Question 4

water moves in and out of cell vacuoles by osmosis through the tonoplast and cell membranes

Answer 4

vacuolar route

Question 5

the absorption of water by osmosis is usually assisted by ___________ that requires energy.

Answer 5

active transport

Question 6

water is absorbed from the soil by root hairs and other epidermal cells through __________.

Answer 6

osmosis

Question 7

transports water from roots to different parts of the plants

Answer 7

xylem

Question 8

release of water vapor through opening in leaves (stomata) causes the pressure that pulls the water up

Answer 8

transpiration

Question 9

prevent backflow of water and nutrients into the soil

Answer 9

casparian strip

Question 10

water molecules adhere to one another (water to water)

Answer 10

cohesive forces

Question 11

water molecules adhere to the walls of the tube (water to substance)

Answer 11

adhesive forces

Question 12

transports organic compounds (food), amino acids, and dissolved sugar

Answer 12

phloem

Question 13

one-way flow of sap

Answer 13

xylem

Question 14

two-way flow of sap

Answer 14

phloem

Question 15

transport of
organic substances such as the
soluble products of photosynthesis
in plants.

Answer 15

translocation

Question 16

consist of living cells
arranged end to end to form
cylindrical tubes.

Answer 16

sieve tubes

Question 17

perforated discs that
separate sieve cells form one
another

Answer 17

sieve plates

Question 18

connects companion cell to sieve cell

Answer 18

plasmodesmata

Question 19

arranged next to
the sieve cells. It contains a nucleus.

Answer 19

companion cells

Question 20

through dead cells

Answer 20

xylem

Question 21

through living cells

Answer 21

phloem

Question 22

The sieve tubes in the leaf are a _______ region in the pressure flow.

Answer 22

source

Question 23

The root cells are a _____ region in the pressure flow.

Answer 23

sink

Question 24

when the concentration of an ion inside the cell is lower compared to the outside

Answer 24

diffusion

Question 25

for ions already at a higher concentration inside the cell compared to the outside

Answer 25

active transport

Question 26

the movement of a carrier-ion complex requires energy from ___.

Answer 26

ATP

Question 27

a suction power produced by the osmotic pressure created in leaves due to transpiration

Answer 27

transpiration pull

Question 28

another force that exists that pushes from below and responsible for pushing water upwards along the stem

Answer 28

root pressure

Question 29

caused by water that is actively forced out from the living cells into the xylem vessels.

Answer 29

root pressure