Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NAT5 Biology > multicellular organisms-plant transport > Flashcards

multicellular organisms-plant transport Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Biology flashcards Biology 101 flashcards
1
Q

what is the vascular bundle/vein?

A

it is the transport tissue in plants, which is made up of xylem and phloem

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the palisade mesophyll?

A

main photosynthesis cells in a leaf, large cells arranged at the top of the leaf to maximise light exposure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is evaporation?

A

when water changes to water vapour

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are guard cells?

A

they control the opening and closing of the stoma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is transpiration?

A

the process of water moving through a plant and its evaporation through the stomata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the stomata?

A

it is the pores in leaves where water is lost by evaporation and gas exchange takes place

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the spongy mesophyll?

A

it is the photosynthetic cells found below the palisade mesophyll in leaves, surrounded by air spaces. it also carries out gas exchange with the air spaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is the upper epidermus?

A

it is the upper surface of leaves, which has transparent cells to allow light through to photosynthetic cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is the lower epidermus?

A

the lower surface of leaves which contain the stomata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what are root hair cells?

A

they are cells with increased surface area for water absorption from the soil

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the xylem?

A

it is the transport tissue for water and minerals through the plant to the leaves. they are dead, hollow tubes thickened with spirals of lignin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is lignin?

A

spirals which coat the inside of xylem vessels to strengthen and support the xylem vessel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what are sieve tubes?

A

they are part of the phloem vessel, and they allow sugar to be transported through it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the phloem?

A

living transport tissue for sugar. sieve tubes attached to companion cell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what are the factors which affect the rate of transpiration?

A

-wind speed
-humidity
-surface area
-temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is transported up and down in living phloem cells?

A

sugar

17
Q

what is the structure of plant cells?

A

-Upper epidermus
-Palisade mesophyll
-Spongy mesophyll
-Guard cells
-Stomata
-Vein
-Lower epidermus

18
Q

how does water enter root hairs?

A

by osmosis

19
Q

what do the rings of lignin around the xylem do?

A

they stop the tube from closing under the pressure of the water

20
Q

describe water movement in a plant:

A

-water moves into the root hairs by osmosis, it then travels upwards to the leaves in the xylem, then it travels to the stomata where it evaporates

21
Q

what happens to the rate of transpiration when the wind speed increases?

A

transpiration rate increases

22
Q

what happens to the rate of transpiration when the temperature increases?

A

transpiration rate increases

23
Q

what happens to the rate of transpiration when the surface area increases?

A

transpiration rate increases

24
Q

what happens to the rate of transpiration when the humidity increases?

A

transpiration rate decreases

25
Q

what happens to the rate of transpiration when the wind speed decreases?

A

transpiration rate decreases

26
Q

what happens to the rate of transpiration when the temperature decreases?

A

transpiration rate decreases

27
Q

what happens to the rate of transpiration when the surface area decreases?

A

transpiration rate decreases

28
Q

what happens to the rate of transpiration when the humidity decreases?

A

transpiration rate increases

29
Q

what can the rate of transpiration be measured by?

A

a potometer

30
Q

what are the 2 types of potometer?

A

a mass potometer, and a bubble potometer

31
Q

how does a mass potometer work?

A

as water evaporates from the surface of the leaves the water loses mass, the faster the rate of transpiration, the more mass the shoot will lose in a given time

32
Q

how does a bubble potometer work?

A

as water moves up through the plant the air bubble moves along the scale giving a measure of water absorbed by the plant over time and hence the transpiration rate

33
Q

why is there a layer of oil over the water the shoot is sitting in in a mass potometer?

A

to prevent the water evaporating from the soil

34
Q

what does sugar give plants?

A

it gives plants the energy required for growth and repair

35
Q

what direction does the xylem transport?

A

ONLY UPWARDS

36
Q

what direction does the phloem transport?

A

both upwards and downwards

37
Q

if the guard cell is turgid…

A

the stomata is opened

38
Q

if the guard cell is flaccid…

A

the stomata is closed

NAT5 Biology (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions