UMKC Bio 109 Quiz 2 Questions With Complete Solutions
_________ prevents seeds from germinating until conditions are
favorable for the growth of the plant.
A. ethylene
B. brassinosteroids
C. auxin
D. abscisic acid
E. cytokinins Correct Answer D. abscisic acid
A molecule in a plant is transported by going into the cytosol of
one cell, leaving the cytosol and entering the cell wall, and then
entering the cytosol of a second cell. This molecule has taken
which transport route?
A. transmembrane
B. symplastic
C. apoplastic
D. protoplastic
E. iconosplastic Correct Answer A. transmembrane
A plant cell with a solute potential of -0.50 MPa maintains a
constant volume when bathed in a solution that has a solute
potential of -0.30 MPa and is an open container. What do we
know about the cell?
A. The cell has a water potential of 0 MPa.
B. The cell has a pressure potential of +0.20 MPa.
C. The cell has a water potential of -0.50 MPa.
D. The cell has a pressure potential of +0.60 MPa.
E. The cell has a water potential greater than that of the
surrounding solution. Correct Answer B. The cell has a
pressure potential of +0.20 MPa.
, A water soluble toxin is found in the groundwater where a plant
is growing. Which of the following is best able to prevent that
toxin from entering the xylem in the plant root?
A. the companion cell
B. the cork
C. the Casparian strip
D. the cuticle
E. the stele Correct Answer C. the Casparian strip
Annual rings are distinct traits in plants growing in:
A. temperate regions
B. grasslands
C. tropical regions
D. arctic regions
E. desert regions Correct Answer A. temperate regions
Based on the ABC model, what would be the structure of a
flower (in a cross-section of the flower, from the outside to the
center) that had normal expression of genes A and C but lacked
expression of gene B?
A. carpel-petal-petal-carpel
B. carpel-stamen-stamen-carpel
C. sepal-petal-petal-sepal
D. sepal-sepal-carpel-carpel
E. carpel-stamen-carpel-stamen Correct Answer D. sepal-
sepal-carpel-carpel
How many mitotic divisions are required for conversion of the
microspore to the male gametophyte?
A. one
_________ prevents seeds from germinating until conditions are
favorable for the growth of the plant.
A. ethylene
B. brassinosteroids
C. auxin
D. abscisic acid
E. cytokinins Correct Answer D. abscisic acid
A molecule in a plant is transported by going into the cytosol of
one cell, leaving the cytosol and entering the cell wall, and then
entering the cytosol of a second cell. This molecule has taken
which transport route?
A. transmembrane
B. symplastic
C. apoplastic
D. protoplastic
E. iconosplastic Correct Answer A. transmembrane
A plant cell with a solute potential of -0.50 MPa maintains a
constant volume when bathed in a solution that has a solute
potential of -0.30 MPa and is an open container. What do we
know about the cell?
A. The cell has a water potential of 0 MPa.
B. The cell has a pressure potential of +0.20 MPa.
C. The cell has a water potential of -0.50 MPa.
D. The cell has a pressure potential of +0.60 MPa.
E. The cell has a water potential greater than that of the
surrounding solution. Correct Answer B. The cell has a
pressure potential of +0.20 MPa.
, A water soluble toxin is found in the groundwater where a plant
is growing. Which of the following is best able to prevent that
toxin from entering the xylem in the plant root?
A. the companion cell
B. the cork
C. the Casparian strip
D. the cuticle
E. the stele Correct Answer C. the Casparian strip
Annual rings are distinct traits in plants growing in:
A. temperate regions
B. grasslands
C. tropical regions
D. arctic regions
E. desert regions Correct Answer A. temperate regions
Based on the ABC model, what would be the structure of a
flower (in a cross-section of the flower, from the outside to the
center) that had normal expression of genes A and C but lacked
expression of gene B?
A. carpel-petal-petal-carpel
B. carpel-stamen-stamen-carpel
C. sepal-petal-petal-sepal
D. sepal-sepal-carpel-carpel
E. carpel-stamen-carpel-stamen Correct Answer D. sepal-
sepal-carpel-carpel
How many mitotic divisions are required for conversion of the
microspore to the male gametophyte?
A. one
