B7.1 - Transport in plants

Question 1

the xylem is specialized to

Answer 1

transport water up the stem and into the leaves

Question 2

Xylem vessels are made up of a series of

Answer 2

connected dead xylem cels

Question 3

the end walls of the dead cells are broke to allow

Answer 3

water to move through

Question 4

xylem tissue is made up of

Answer 4

dead hollowed-out cells

Question 5

lignin strengthens

Answer 5

the cell wall of the xylems

Question 6

what substance strengthens the cell walls of xylems

Answer 6

lignin

Question 7

The broken end walls

Answer 7

allow water movement

Question 8

xylem is important for carrying

Answer 8

water and dissolved mineral ions from the root

Question 9

The phloem is specialized to transport

Answer 9

food products (sucrose and amino acids) to parts of the plant where they are necessary

Question 10

phloem cells are made up of

Answer 10

columns of living cells

Question 11

which tube transports water and minerals from the roots to the leaves

Answer 11

xylem

Question 12

which tube transports food products to parts of the plant where necessary

Answer 12

phloem

Question 13

the end walls of phloem cells contain

Answer 13

small holes

Question 14

why does the phloem have small holes at end walls

Answer 14

to allow food products to move up and down the phloem vessels

Question 15

where does water osmose in the plant

Answer 15

root hair cells

Question 16

what are root hairs with projections for

Answer 16

having large surface area for osmosis

Question 17

where does water move up

Answer 17

root cortex cells

Question 18

where do the xylem vessels collect water

Answer 18

root cortex cells

Question 19

after water reaches the xylem where does it osmose to next

Answer 19

mesophyll cells in the leaf where water osmoses out of the xylem into the cells

Question 20

How to investigate water pathway?

Answer 20

put a wilted celery stalk in water that contains a stain like food dye and see if the food dye travels up the celery stem.

Question 21

Mineral ions are taken up by

Answer 21

active transport

Question 22

Water molecules in the xylem stick by

Answer 22

cohesion drawing up the water to the stem

Question 23

when water reaches the leaves most of it

Answer 23

evaporates from the surface of the leaf

Question 24

water vapor diffuses out of the

Answer 24

stomata

Question 25

In which direction does xylem transport

Answer 25

Roots to leaves

Question 26

In which direction does phloem transport

Answer 26

Source to sink

Question 27

What is the name of the transport that happens in the xylem

Answer 27

Transpiration

Question 28

What is the name of the transport that happens in the phloem?

Answer 28

Translocation

Question 29

Define translocation

Answer 29

Movement of sucrose from source to sink in the phloem

Question 30

Define transpiration

Answer 30

The movement of water through the xylem from roots to leaves of a plant

Question 31

increasing humidity

Answer 31

decreases transpiration

Question 32

why does increasing humidity decrease transpiration

Answer 32

too much water in the air so harder to evaporate

Question 33

increasing temperature

Answer 33

increases transpiration

Question 34

why does increasing temperature increase transpiration

Answer 34

water evaporates faster increasing the rate

Question 35

what apparatus is used for rate of transpiration

Answer 35

potometers

Question 36

measuring rate of transpiration

Answer 36

As water is lost through the plant’s leaves, the air bubble moves.
The speed of the bubble’s movement shows the rate of water uptake.
This is only an estimation as a small amount of the water taken up by the shoot is used in the leaves.

Question 37

increase wind speed

Answer 37

increases transpiration

Question 38

why is sucrose transported

Answer 38

conversion back to glucose for respiration, cell growth and conversion to starch to be stored until needed.