Transpiration and Translocation

?
  • Created by: sara.5
  • Created on: 06-04-18 12:28
What is transpiration?
The flow of water into a root up the stem and out of the leaves
1 of 11
What are xylem tube form?
Tiny continuous pipes leading from the plants up to its leaves
2 of 11
What flows in the xylem tubes?
There is an unbroken chain of water due to the weak forces of attraction between water molecules
3 of 11
What happens when water diffuses out of a leaf?
More water evaporates from the xylem into the leaf
4 of 11
In which area is the concentration greater ?
The concentration of water vapour is greater in the air spaces inside a leaf the out side
5 of 11
What does a bigger concentration mean?
It make the gradient stepper therfore diffusion happens faster
6 of 11
What factors increase transpiration?
-Wind(moves molecules away from stomata) -Low Humidity(little water vapour in the air) -Higher temperature(particles move faster and so diffuse faster) -Greater light intensity(makes stomata wider)
7 of 11
What are the adaptation of a Xylem tube
-Dead cells have no cytoplasm so forms an empty tube for water to flow in-Tiny pores let water and mineral ions enter and leave xylem vessels -Lack of cell wall between cells men that water flow is not slowed
8 of 11
Another adaptation of Xylem tubes are...
Thick side walls and rings of lignin form rigid tubes that will not burst/collapse under high pressure of water and provides support
9 of 11
What are the adaptation of Phloem?
Companion cells actively pump sucrose in/out of the sieve cell.- The increaseed pressur causes sucrose to flow to growign shoots or storage organs- pores allow sucrose solution to be pumped in -Holes at the end of the cell wall allow liquid to flow
10 of 11
Other adaptations are...
Holes at the end of the cell wall allow liquid to flow from one sieve to the next -small cytoplasm means more room for central channel
11 of 11

Other cards in this set

Card 2

Front

What are xylem tube form?

Back

Tiny continuous pipes leading from the plants up to its leaves

Card 3

Front

What flows in the xylem tubes?

Back

Preview of the front of card 3

Card 4

Front

What happens when water diffuses out of a leaf?

Back

Preview of the front of card 4

Card 5

Front

In which area is the concentration greater ?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Photosynthesis and transpiration resources »