Science 10
Unit C: Cycling Matter in Living Systems
Part 3: Plants and their Transport Systems
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/10
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How Do Plants Move Matter Around?
I can describe a plant’s transport system, and explain the function of each part of it.
A. phloem and xylem tissues
D. turgor pressure and osmosis
B. the process of transpiration
E. diffusion
C. the properties of water that
F. active transport
allow cohesion and adhesion.
G. root pressure in root hairs
I can describe the structure of a plant’s leaf, and how each type of cell works to help the
plant exchange gases and do photosynthesis.
A. epidermis including guard cells,
D. phloem and xylem
B. palisade tissue cells,
E. lenticels
C. spongy tissue cells,
F. stomata
I can explain the way that plants respond to their environment, including phototropism
and gravitropism.
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
C3.1:
1. An example of xylem tissue is
a.
b.
c.
d.
openings in leaves
long fibres in celery
cells that covers the surface of leaves
small projections extending from roots
2. Long tubes that carry water and sugar from leaves to the rest of the plant are
known as ____________________________ tissue.
3. Which is not part of the shoot system?
a.
b.
c.
d.
cuticle
root hair
stomata
xylem
4. Tissue that lies beneath the epidermis and makes up the majority of the plant is
called ____________________ tissue.
5. Label the following cross section of a plant stem using terms from the list provided.



companion cells
epidermis
ground tissue



guard cells
phloem
stomata


vascular bundle
xylem
(2 marks)
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Science 10
Unit C: Cycling Matter in Living Systems
6. Match each function with the correct structure from the following list.



cuticle
stomata
xylem



root hairs
ground tissue
companion cells


epidermis
guard cells
(4 marks)
moves water and dissolved minerals from roots up the stem to the leaves
outer layer that covers all of non-woody plants; responsible for the
exchange of matter and gases into and out of plants
form tiny pores on the under side of leaves
tiny pores on the under side of leaves that allow for movement of gases in
and out of leaves
prevents excess evaporation of water
directs activities of sieve tube cells
increases absorption capacity of roots
provides strength and support for plant; stores food and water for plant;
is the location of photosynthesis
C3.2:
7. The organelles where photosynthesis takes place are the _____________________.
8. Which is a reactant in the process of photosynthesis?
a.
b.
c.
d.
carbon dioxide
chlorophyll
oxygen
glucose
9. How many chloroplasts are present in a typical plant cell? (Hint: look for a
photograph of a plant cell in this chapter of your textbook)
a.
b.
c.
d.
2 to 4
20 to 40
200 to 400
2000 to 4000
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Science 10
Unit C: Cycling Matter in Living Systems
10. Cells directly obtain energy to fuel their activities from
a.
b.
c.
d.
photosynthesis
cytoplasmic streaming
cellular respiration
cellular transport
Bromothymol blue is an acid base indicator. This chemical turns yellow if it is mixed
with an acid, and turns blue if it is mixed with a base.
11. A vial with water, bromothymol blue, carbon dioxide, and a plant are left for 24
hours in the light. The colour of the solution turns from yellow to blue. This colour
change is due to the plant
a.
b.
c.
d.
releasing oxygen into the solution through cellular respiration
releasing carbon dioxide into the solution through photosynthesis
removing oxygen from the solution by cellular respiration
removing carbon dioxide from the solution by photosynthesis
12. Two vials with water, bromothymol blue, and a snail are left for 24 hours, one in the
light and one in the dark. The colour changes from blue to green or yellow in both
vials because the snail
a.
b.
c.
d.
uses oxygen from the solution
uses carbon dioxide from the solution
releases oxygen into the solution
releases carbon dioxide into the solution
13. Balance the equation for cellular respiration by writing the correct number in the
blank spaces given.
_____ C6H12O6(aq) + _____ O2(g)  _____ CO2(g) + _____ H2O(l) + energy
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
C3.3:
14. Specialized cells that regulate the movement of water and other gases in and out of
the leaf of the plant are known as _____________________ cells
15. The process of water vapour leaving a leaf through the stomata is called
_____________________.
16. When a potassium ion (K+) enters a guard cell, it creates a solution of
a.
b.
c.
d.
high water concentration inside the guard cells
low water concentration inside the guard cells
low water concentration outside the guard cells
low ion concentration inside the guard cells
17. Plants that grow in low-moisture climates have adaptations that help them to
survive. Describe one way in which the leaves of a plant in a dry climate are
different than the leaves of a plant in a moist climate.
18. Cells responsible for the majority of photosynthesis in the leaf are called
_____________________ cells.
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
19. There are six statements below. Three of them are false. Correct the false
statements to make them into true statements. (3 marks – half for finding the false
statements, half for correcting them)

Gas exchange in all plants occurs only through the leaves.

Spongy layer cells are loosely packed so air can move between the cells.

Leaves do not contain vascular tissue.

Palisade tissue cells contain chlorophyll.

The opening and closing of stomata is sometimes regulated by the amount of
carbon dioxide available.

When guard cells become turgid, the stomata close.
C3.4:
20. The attraction of water molecules to other water molecules is known as
_____________________.
a.
b.
c.
d.
adhesion
cohesion
osmosis
capillary action
21. Water seen early in the morning only on the tip of a blade of grass is due to
a.
b.
c.
d.
active transport
turgor pressure
capillary action
root pressure
22. Transpiration is due to
a.
b.
c.
d.
root pressure
excess ground water
excess moisture in the air
evaporation of water through stomata and lenticels
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
23. If a cell is placed into a solution that is hypotonic to the cell contents, what will
happen? (You may need to review what “hypotonic” means, from the last
assignment).
a.
b.
c.
d.
water will move into the cell
water will move out of the cell
sugar will move into the cell
there will be a decreased evaporation rate in the leaves
24. Water moves into phloem cells by osmosis and creates an increased pressure that
pushes the sugar and water in the phloem to the rest of the plant. This description
of moving materials through the phloem is called
a.
b.
c.
d.
phloem theory
pressure difference
pressure-flow theory
active transport
25. Which two forces cause water and minerals to move up the xylem?
a.
b.
c.
d.
source and sink
osmosis and active transport
plasmolysis and pressure differences
root pressure and transpiration pull
26. Describe what you will observe when the solution outside a plant cell has a higher
solute concentration than the contents of the cell (2 marks):
-
Will water flow into the cell, or out of the cell?
-
What will happen to the shape of the cell?
27. Why does cutting through the bark of a tree often kill the tree? (2 marks)
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
28. Complete the following table (5 marks).
Location
Substance(s)
Moved
Direction of
Movement
Mechanism for Movement
leaves
sugar
down the stem
active transport
leaves
water
up the stem
phloem
root
pressure difference
sugar
root
xylem
osmosis
water and
minerals
C3.5:
29. Signals that organisms respond to are called _______________________.
30. A plant bends toward a light source as it grows. This is an example of
a.
b.
c.
d.
positive gravitropism
negative gravitropism
positive phototropism
negative phototropism
31. A corn seed is germinated in the dark. The root grows in a downward direction. This
shows the effect of
a.
b.
c.
d.
positive gravitropism
negative gravitropism
positive phototropism
negative phototropism
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
32. The phototropic response to light occurs
a.
b.
c.
d.
at the tip of the stem
at the base of the stem
part way down the stem
in the root of the plant
33. The tip of the stem of an oat leaf plant is covered with aluminium foil. A light source
from one side will
e.
f.
g.
h.
cause the stem to bend toward the light source
cause the stem to bend away from the light source
cause the stem to wither an die
have no effect on the stem
34. There are four statements below. Two of them are false. Correct the false
statements to make them into true statements. (2 marks – half for finding the false
statements, half for correcting them)

The chemical substance responsible for communicating stimulus information is
called a hormone.

When the tip of a stem is covered with a transparent cap, the stem does not
bend toward the light source.

When the base of a stem is covered with an opaque shield, the stem bends
away from the light source.

An example of another control mechanism is that some plants require more
than 12 hours of darkness to produce flowers.
7/31/2017
Science 10
Unit C: Cycling Matter in Living Systems
35. This diagram shows a seed that is just beginning to sprout – the plant is only a few
hours old. Describe how the plant ‘knows’ which way to send its root and its stem,
by writing the following terms in the correct blanks on the diagram.


root
stem


negative gravitropism
positive gravitropism


negative phototropism
positive phototropism
(3 marks)
7/31/2017