Checkpoint Chapter 8 Transport in Plants
(Bio G10)
ATTENTION
Here I sent a google form containing questions that must be done about Transport in plants.
There are 20 questions, please do as many as you can (at least do 10 questions).
I will distribute the correct answer points as additional points for other grades that are still lacking.
* Indicates required question
1.
Email *
2.
Name *
3.
Class *
Mark only one oval.
10A (Girls)
10B (Boys)
MULTIPLE CHOICE QUESTIONS
Please, do your best and good luck!
4.
Which statement is NOT true about translocation? *
2 points
Mark only one oval.
Phloem can transfer sucrose in either direction, up or down the plant
Phloem can transfer photosynthesis products from the sink to the source
When a plant is actively photosynthesising, its leaves are the source for translocation
The root can be a sink where food is stored
5.
The diagram below shows an experiment with a plant. *
What is the purpose of this experiment?
Mark only one oval.
To show that plants make food through photosynthesis
To show that water evaporates from the leaf by transpiration
To show that water enters the plant through its roots
To show the path of water in plant
2 points
6.
The diagram shows cross – sections of organs from a dycotyledonous plant. *
2 points
Which numbers label xylem in stem and in root?
Mark only one oval.
1 and 3
1 and 4
3 and 5
3 and 6
7.
The table shows the substances transported in phloem and xylem.
Which row is correct?
Mark only one oval.
A
B
C
D
2 points
8.
Which is the term for loss of water from a leaf by evaporation?
2 points
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Cohesion
Translocation
Transpiration
Active transport
9.
What is the term for water molecules to stick together to form a column of water in
xylem vessels?
Mark only one oval.
Translocation
Transpiration
Adhesion
Cohesion
*
2 points
10.
A dicot plant is placed into a bowl of water colored with red dye. After one-hour, thin *
sections are cut from stem and roots. Diagram shows cross sections of stem and
root taken from this plant.
Which labelled regions would be colored red?
Mark only one oval.
1 and 3
2 and 3
2 and 4
1 and 4
2 points
11.
Diagram shows cross sections from dicot plant’s stem and root. Which labelled parts
2 points
have roles in translocation?
Mark only one oval.
1 and 3
1 and 4
2 and 3
2 and 4
12.
Plants need water for photosynthesis
Which is the correct pathway for water, starting from the site of absorption until the
site of photosynthesis?
Mark only one oval.
Meshophyll cell -> xylem -> root cortex cell -> root hair cell
Root cortex cell -> root hair cell > xylem -> meshophyll cell
Root hair cell -> xylem -> root cortex cell -> meshophyll cell
Root hair cell -> root cortex cell -> xylem -> meshophyll cell
2 points
13.
The diagram below shows a potted plant and the same plant 48 hours later. *
2 points
What has caused the plant’s appearance to change?
Mark only one oval.
Water loss by translocation is greater than water uptake
Water evaporating from the leaves by translocation
Water loss by transpiration is greater than water uptake
Water loss from the leaves by osmosis
14.
Which order below is correct in describing the pathway of water as it travels from the *
roots through a plant?
Mark only one oval.
Root hair cell -> xylem -> meshophyll cell -> air spaces -> stomata
Root hair cell -> xylem -> air spaces -> mesophyll cells -> stomata
Root hair cell -> mesophyll cells -> phloem -> stomata
Root hair cell -> mesophyll cells -> xylem -> stomata
2 points
15.
The diagram shows a simplified water cycle.
Which of the processes listed below would be involved in the loss of water from the
tree?
Mark only one oval.
Respiration
Translocation
Photosynthesis
Evaporation
2 points
16.
A potometer can be used to measure the rate that a piece of plant transpires under
various conditions.
*
2 points
Part of a potometer is shown in the diagram below.
Which statement, relating to how a potometer works is false?
Mark only one oval.
A potometer uses the transpiration stream to produce movement of an air bubble that can be
measured
In a potometer, an air bubble moves away from the piece of plant tissue that is under
investigation
In order to determine the rate of transpiration, the movement of the bubble must be measured
alongside the time taken
The leaves of the plant in the potometer must be dry during the experiment
17.
Which of the following is a correct explanation of the effect of root hairs on
absorption?
*
2 points
Mark only one oval.
Provide a large surface are, maximizing the rate of absorption of water and ions by osmosis
Provide a large surface area, maximizing the rate of absorption of water by osmosis and ions
by active transport
Increase the surface are, maximizing the uptake of water by osmosis and ions by diffusion
Provide a surface area, increasing the rate of absorption of water and ions by active transport
18.
Which of the following processes is/ are involved in the loss of water from the leaves
of plants?
1)
Diffusion
2)
Osmosis
3)
Condensation
4)
Evaporation
2 points
Mark only one oval.
1 and 3
1 only
4 only
1 and 4
19.
A student collected some of the solution from the phloem in the stem of a plant.
2 points
Which of the following would be present in the liquid?
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Glucose
Starch
Amino acids
Cellulose
20.
A decrease in which of the following factors would normally cause the transpiration
rate to increase?
Mark only one oval.
Stomatal density
Light intensity
Temperature
Humidity
2 points
21.
Which environmental factor is most likely to be responsible for a plant to wilt?
2 points
Mark only one oval.
A decrease in light intensity
An increase in humidity
A decrease in the amount of available water
A decrease in wind speed
22.
The xylem has specific adaptations to allow it to transport water and mineral ions
from the roots of a plant to the leaves as a result of transpiration.
Which processes produce the adaptation in xylem vessels to allow the continuous
flow of water?
Mark only one oval.
A
B
C
D
*
2 points
23.
Which of the following graphs shows most clearly what would happen to the rate of *
transpiration as humidity decreases?
Mark only one oval.
A
B
C
D
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