Question 1

Which of the following cells or tissues arise from lateral meristem activity?

Accepted Answer

A)   secondary xylem
B)   leaves
C)   trichomes
D)   tubersE) None of the above
F) A) and B)

Question 2

Some understory plants in dense tropical rain forests have very large leaves. Which of the following is the most likely selective advantage of these leaves?

Accepted Answer

A)   The higher oxygen concentration on the forest floor stimulates leaf growth.
B)   High rates of photosynthesis from these large leaves lower carbon dioxide levels in the interior of the forest.
C)   Low light levels slow photosynthesis but increase respiration rates to provide energy necessary for leaf growth.
D)   Increased leaf surface area maximizes light absorption for photosynthesis under low light intensity.E) All of the above
F) B) and C)

Question 3

Which of the following best describes the driving force that pushes the root tip through the soil?

Accepted Answer

A)   continuous cell division in the root cap at the tip of the root
B)   continuous cell division just behind the root cap in the center of the apical meristem
C)   elongation of cells behind the root apical meristem
D)   continuous cell division of root cap cellsE) All of the above
F) A) and B)

Question 4

An initial cell in a plant apical meristem has a cuboidal shape. Predict the orientation of microtubules beneath the cell membrane if that cell will differentiate into procambium and ultimately a xylem vessel.

Accepted Answer

A)   Microtubules are arranged randomly around the cell.
B)   Parallel microtubules are oriented in the direction the cell will eventually expand.
C)   Rings of microtubules are oriented in the plane the cell will eventually expand.
D)   Rings of microtubules are oriented at right angles to the direction the cell will eventually expand.E) None of the above
F) A) and C)

Question 5

Which of the following root tissues gives rise to lateral roots?

Accepted Answer

A)   endodermis
B)   phloem
C)   epidermis
D)   pericycleE) None of the above
F) A) and C)

Question 6

Which of the following cells transport sugars over long distances?

Accepted Answer

A)   parenchyma cells
B)   sclerenchyma cells
C)   tracheids and vessel elements
D)   sieve-tube elementsE) None of the above
F) A) and C)

Question 7

A student examining leaf cross sections under a microscope finds many loosely packed cells with relatively thin cell walls. The cells have numerous chloroplasts. What type of cells are they?

Accepted Answer

A)   parenchyma
B)   endodermis
C)   collenchyma
D)   sclerenchymaE) None of the above
F) A) and D)

Question 8

When is the polarity of a plant established?

Accepted Answer

A)   when the cotyledons form at the shoot end of the embryo
B)   when the shoot-root axis is established in the embryo
C)   when the primary root breaks through the seed coat
D)   when the shoot first breaks through the soil into the light as the seed germinatesE) B) and D)
F) A) and B)

Exam 35: Plant Structure and Growth

An initial cell in a plant apical meristem has a cuboidal shape. Predict the orientation of microtubules beneath the cell membrane if that cell will differentiate into procambium and ultimately a xylem vessel.

Correct Answer
verified

A student examining leaf cross sections under a microscope finds many loosely packed cells with relatively thin cell walls. The cells have numerous chloroplasts. What type of cells are they?

Correct Answer
verified

Which of the following cells or tissues arise from lateral meristem activity?

Correct Answer
verified

Some understory plants in dense tropical rain forests have very large leaves. Which of the following is the most likely selective advantage of these leaves?

Correct Answer
verified

Which of the following root tissues gives rise to lateral roots?

Correct Answer
verified

Which of the following cells transport sugars over long distances?

Correct Answer
verified

When is the polarity of a plant established?

Correct Answer
verified

Which of the following best describes the driving force that pushes the root tip through the soil?

Correct Answer
verified

Exam 35: Plant Structure and Growth

An initial cell in a plant apical meristem has a cuboidal shape. Predict the orientation of microtubules beneath the cell membrane if that cell will differentiate into procambium and ultimately a xylem vessel.

Correct AnswerverifiedShow Answer

A student examining leaf cross sections under a microscope finds many loosely packed cells with relatively thin cell walls. The cells have numerous chloroplasts. What type of cells are they?

Correct AnswerverifiedShow Answer

Which of the following cells or tissues arise from lateral meristem activity?

Correct AnswerverifiedShow Answer

Some understory plants in dense tropical rain forests have very large leaves. Which of the following is the most likely selective advantage of these leaves?

Correct AnswerverifiedShow Answer

Which of the following root tissues gives rise to lateral roots?

Correct AnswerverifiedShow Answer

Which of the following cells transport sugars over long distances?

Correct AnswerverifiedShow Answer

When is the polarity of a plant established?

Correct AnswerverifiedShow Answer

Which of the following best describes the driving force that pushes the root tip through the soil?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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