Question

The process of transpiration is responsible for the transportation of water through the xylem. On which part of a plant is negative pressure exerted during this transport?


plant stem


root hairs


leaf mesophyll

Answer 1

Its the plant stem..i.e A

Answer 2

all? of the parts?

Answer 3

why is it plant stem?

Answer 4

that was wrong lol

Answer 5

Its because as water vapor is lost through the stomata of the leaves, water molecules are pulled upward through the xylem tissue to replace the water that is lost...

Answer 6

well i think it is c...

Answer 7

so why wouldn't it be mesophyll then?

Answer 8

The answer should be Leaf meshophyll

Answer 9

idk =-=

Answer 10

@KL-RC @littel_red @vacationeer WHY?

Answer 11

i mean..... if it happens in the leaf mesophyll..... that means that the negative pressure is also exerted on the stem, which is in turn exerted on the root hairs.....

Answer 12

Do you guys something called "Hydrostaic pressure?"

Answer 13

*guys know

Answer 14

yes sir

Answer 15

i know it kind

Answer 16

somewhat..

Answer 17

Ok great

Answer 18

it keeps things equal inside the cell and the outside right like keep it even with its enviroment?

Answer 19

What transpiration is which is very similar to something of like sucking from a straw

Answer 20

you know? like from drink or something?

Answer 21

So when you suck at the top of the straw the hydrostatoc pressure is LOW

Answer 22

im so lost 0-0?

Answer 23

at the bottom of the straw it's HIGH

Answer 24

Ohkk nw i gt it somewhat...

Answer 25

Hydro means amount of water

Answer 26

you know that during photosynthesis water is constantly used right?

Answer 27

which is at the TOP

Answer 28

at the bottom (roots) is where there is most water found

Answer 29

is HYDROstatic pressure in more at the bottom

Answer 30

@KL-RC ... just one thing.... the negative pressure is transferred down to the roots though yes? in order to "suck up" the water from the soil

Answer 31

Negative meaning LESS pressure so? what does your common sense say?

Answer 32

yes... so it is higher in the roots... but in the roots... it is still lower than the surrounding soil... therefore all the answer choices are correct yes?

Answer 33

NO

Answer 34

how does the water enter the root then?

Answer 35

The roots draws all the mineral ions so that water DIFFUSES INTO the root

Answer 36

get it?

Answer 37

concentration difference?

Answer 38

but the root has a lower hydrostatic pressure as well... because the water is being drawn up from the roots to the leaves

Answer 39

n not need to get cocky please..

Answer 40

cocky? I'm just explaining O_o

Answer 41

http://www.bio.miami.edu/dana/pix/xylem_sap_ascent.jpg

Answer 42

still no need for the caps... and the "get it?"s

Answer 43

What I'm saying is that this is a continuous process, the water that is being taken up is constantly replaced with the once that is being taken again from the surroundings

Answer 44

so all the answer choices then right, no?

Answer 45

why r u choosing that option?

Answer 46

cuz..... its technically the true answer?

Answer 47

why?

Answer 48

cuz the negative pressure is exerted throughout.... its a gradient throughout the whole xylem (from root to leaves)

Answer 49

they say which 'part', you're looking at the whole plant

Answer 50

because it works every single part of the plant...

Answer 51

and yes i'm looking at the whole plant... because... negative pressure is at work in every single part of the plant... therefore all the answer choices are correct...

Answer 52

no matter how I look it, it's not possible

Answer 53

according to what ur saying if negative was all over those parts, do u have any idea what ur saying??

Answer 54

negative being all over those parts would be = no net of water molecules coz all pressure will be equal meaning the pressure has come to an equilibrium.

Answer 55

leaf mesophyll

Answer 56

Its C