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LSU BIOL 1202 (POMARICO) - CH. 36
QUESTIONS WITH SOLUTIONS
Some botanists argue that the entire plant should be considered as a single unit
rather than a composite of many individual cells. Which of the following cellular
structures best supports this view? -correct-answer-plasmodesmata
A water molecule could move all the way through a plant from soil to root to leaf
to air and pass through a living cell only once. This living cell would be a part of
which structure? -correct-answer-the endodermis
If isolated plant cells with a water potential averaging -0.5 MPa are placed into a
solution with a water potential of -0.3 MPa, which of the following would be the
most likely outcome? -correct-answer-The pressure potential of the cells would
increase.
Several tomato plants are growing in a small garden plot. If soil water potential
were to drop significantly on a hot, summer afternoon, which of the following
would most likely occur? -correct-answer-Size of stomatal openings would
decrease.
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Which of the following is a correct statement about a difference between xylem
and phloem transport? -correct-answer-Xylem sap moves up; phloem sap moves
up or down.
A student is performing a chemical analysis of xylem sap. This student should not
expect to find much _____. -correct-answer-sugar
Water potential is generally most negative in which of the following parts of a
plant? -correct-answer-mesophyll cells of the leaf
Transpiration in plants requires _____.
I) adhesion of water molecules to cellulose
II) cohesion between water molecules
III) evaporation of water molecules
IV) active transport through xylem cells
V) transport through tracheids -correct-answer-I, II, III, and V
Chemical bonds hold together the atoms that make up a molecule. Molecules may
also be attached to one another by chemical bonds. The figure shows how
hydrogen bonds attach water molecules to other water molecules.
LSU BIOL 1202 (POMARICO) - CH. 36
QUESTIONS WITH SOLUTIONS
Some botanists argue that the entire plant should be considered as a single unit
rather than a composite of many individual cells. Which of the following cellular
structures best supports this view? -correct-answer-plasmodesmata
A water molecule could move all the way through a plant from soil to root to leaf
to air and pass through a living cell only once. This living cell would be a part of
which structure? -correct-answer-the endodermis
If isolated plant cells with a water potential averaging -0.5 MPa are placed into a
solution with a water potential of -0.3 MPa, which of the following would be the
most likely outcome? -correct-answer-The pressure potential of the cells would
increase.
Several tomato plants are growing in a small garden plot. If soil water potential
were to drop significantly on a hot, summer afternoon, which of the following
would most likely occur? -correct-answer-Size of stomatal openings would
decrease.
, 2|Page
Which of the following is a correct statement about a difference between xylem
and phloem transport? -correct-answer-Xylem sap moves up; phloem sap moves
up or down.
A student is performing a chemical analysis of xylem sap. This student should not
expect to find much _____. -correct-answer-sugar
Water potential is generally most negative in which of the following parts of a
plant? -correct-answer-mesophyll cells of the leaf
Transpiration in plants requires _____.
I) adhesion of water molecules to cellulose
II) cohesion between water molecules
III) evaporation of water molecules
IV) active transport through xylem cells
V) transport through tracheids -correct-answer-I, II, III, and V
Chemical bonds hold together the atoms that make up a molecule. Molecules may
also be attached to one another by chemical bonds. The figure shows how
hydrogen bonds attach water molecules to other water molecules.
