Exam 36: Transport in Vascular Plants

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A plant cell with a Cs of -0.65 MPa maintains a constant volume when bathed in a solution that has a Cs of -0.30 MPa and is in an open container. The cell has a ________.

(Multiple Choice)

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Question 41

Most of the water absorbed by a plant is used for what purpose?

(Multiple Choice)

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Question 42

Photosynthesis ceases when leaves wilt, mainly because ________.

(Multiple Choice)

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Question 43

Plasmodesmata can change in number and, when dilated, can provide a passageway for which of the following?

(Multiple Choice)

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Question 44

Water potential is generally most negative in which of the following parts of a plant?

(Multiple Choice)

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Question 45

Which of the following is another term for solute potential in a cell?

(Multiple Choice)

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Question 46

If Ψ P = 0.3 MPa and ΨS = -0.45 MPa what will be the resulting Ψ?

(Multiple Choice)

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Question 47

Given that early land plants most likely share a common ancestor with green algae, the earliest land plants most likely belonged to which of the following categories?

(Multiple Choice)

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Question 48

What would enhance water uptake by a plant cell?

(Multiple Choice)

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Question 49

The value for Ψ in root tissue was found to be -0.15 MPa If the root tissue were placed in a 0.1 M solution of sucrose (Ψ = -0.23 MPa) the net water flow will be in which of the following directions?

(Multiple Choice)

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Question 50

In the pressure-flow mechanism, loading of sucrose from companion cells to sieve-tube elements requires which of the following?

(Multiple Choice)

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Question 51

Based on the figure, at what time of day is the concentration of the hormone ABA most likely to be highest?

(Multiple Choice)

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Question 52

Which of the following best describes why water flows into the source end of a sieve tube?

(Multiple Choice)

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Question 53

The flux of which one of the following ions plays a dominant role in adjusting the turgor of guard cells during the opening and closing of stomata?

(Multiple Choice)

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Question 54

Compared with a cell with few aquaporin proteins in its membrane, a cell containing many aquaporin proteins will ________.

(Multiple Choice)

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Question 55

The water lost during transpiration is a negative side effect of the plant's requirement for gas exchange. Which of the following is a positive effect of this water loss?

(Multiple Choice)

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Question 56

What is the function of proton pumps localized in the plant plasma membrane?

(Multiple Choice)

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Question 57

The apoplast in plant tissues may include which of the following?

(Multiple Choice)

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Question 58

Which of the following contribute to the surface area available for water absorption from the soil by a plant root system? I. root hairs II. endodermis III. mycorrhizae IV. branching

(Multiple Choice)

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Question 59

Which of the following is a net sugar source for a deciduous angiosperm tree?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 73

Exam 36: Transport in Vascular Plants

A plant cell with a Cs of -0.65 MPa maintains a constant volume when bathed in a solution that has a Cs of -0.30 MPa and is in an open container. The cell has a ________.

Most of the water absorbed by a plant is used for what purpose?

Photosynthesis ceases when leaves wilt, mainly because ________.

Plasmodesmata can change in number and, when dilated, can provide a passageway for which of the following?

Water potential is generally most negative in which of the following parts of a plant?

Which of the following is another term for solute potential in a cell?

If Ψ P = 0.3 MPa and ΨS = -0.45 MPa what will be the resulting Ψ?

Given that early land plants most likely share a common ancestor with green algae, the earliest land plants most likely belonged to which of the following categories?

What would enhance water uptake by a plant cell?

The value for Ψ in root tissue was found to be -0.15 MPa If the root tissue were placed in a 0.1 M solution of sucrose (Ψ = -0.23 MPa) the net water flow will be in which of the following directions?

In the pressure-flow mechanism, loading of sucrose from companion cells to sieve-tube elements requires which of the following?

Based on the figure, at what time of day is the concentration of the hormone ABA most likely to be highest?

Which of the following best describes why water flows into the source end of a sieve tube?

The flux of which one of the following ions plays a dominant role in adjusting the turgor of guard cells during the opening and closing of stomata?

Compared with a cell with few aquaporin proteins in its membrane, a cell containing many aquaporin proteins will ________.

The water lost during transpiration is a negative side effect of the plant's requirement for gas exchange. Which of the following is a positive effect of this water loss?

What is the function of proton pumps localized in the plant plasma membrane?

The apoplast in plant tissues may include which of the following?

Which of the following contribute to the surface area available for water absorption from the soil by a plant root system? I. root hairs II. endodermis III. mycorrhizae IV. branching

Which of the following is a net sugar source for a deciduous angiosperm tree?

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Atoms and Molecules

The Chemistry of Water

Carbon: the Basis of Molecular Diversity

Biological Macromolecules and Lipids

Energy and Life

Cell Structure and Function

Cell Membranes

Cellular Signaling

Cell Respiration

Photosynthetic Processes

Mitosis

Sexual Life Cycles and Meiosis

Mendelian Genetics

Linkage and Chromosomes

Nucleic Acids and Inheritance

Expression of Genes

Control of Gene Expression

Dna Technology

The Evolution of Genomes

How Evolution Works

Phylogenetic Reconstruction

Microevolution

Species and Speciation

Macroevolution

Introduction to Viruses

Prokaryotes

The Origin and Evolution of Eukaryotes

Nonvascular and Seedless Vascular Plants

Seed Plants

Introduction to Fungi

An Introduction to Animal Diversity

Invertebrates

Vertebrates

Plant Structure and Growth

Plant Nutrition

Reproduction of Flowering Plants

Plant Signals and Behavior

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Chemical Signals in Animals

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