Question 1

Which of these is not transported via the symplasm?

Accepted Answer

A) sugars 
B) mRNA 
C) DNA 
D) proteins 
E) viruses 
A) sugars 
B) mRNA 
C) DNA 
D) proteins 
E) viruses

Question 2

Which one of the following statements about transport of nutrients in phloem is False?

Accepted Answer

A) Solute particles can be actively transported into phloem at the source. 
B) Companion cells control the rate and direction of movement of phloem sap. 
C) Differences in osmotic concentration at the source and sink cause a hydrostatic pressure gradient to be formed. 
D) A sink is that part of the plant where a particular solute is consumed or stored. 
E) A sink may be located anywhere in the plant. 
A) Solute particles can be actively transported into phloem at the source. 
B) Companion cells control the rate and direction of movement of phloem sap. 
C) Differences in osmotic concentration at the source and sink cause a hydrostatic pressure gradient to be formed. 
D) A sink is that part of the plant where a particular solute is consumed or stored. 
E) A sink may be located anywhere in the plant.

Question 3

What would enhance water uptake by a plant cell?

Accepted Answer

A) decreased   of the surrounding solution 
B) an increase in pressure exerted by the cell wall 
C) the loss of solutes by the cell 
D) an increase in   of the cytoplasm 
E) positive pressure on the surrounding solution 
A) decreased   of the surrounding solution 
B) an increase in pressure exerted by the cell wall 
C) the loss of solutes by the cell 
D) an increase in   of the cytoplasm 
E) positive pressure on the surrounding solution

Question 4

According to the pressure flow hypothesis of phloem transport,

Accepted Answer

A) solute moves from a high concentration in the "source" to a lower concentration in the "sink." 
B) water is actively transported into the "source" region of the phloem to create the turgor pressure needed. 
C) the combination of a high turgor pressure in the "source" and transpiration water loss from the "sink" moves solutes through phloem conduits. 
D) the formation of starch from sugar in the "sink" increases the osmotic concentration. 
E) the pressure in the phloem of a root is normally greater than the pressure in the phloem of a leaf. 
A) solute moves from a high concentration in the "source" to a lower concentration in the "sink." 
B) water is actively transported into the "source" region of the phloem to create the turgor pressure needed. 
C) the combination of a high turgor pressure in the "source" and transpiration water loss from the "sink" moves solutes through phloem conduits. 
D) the formation of starch from sugar in the "sink" increases the osmotic concentration. 
E) the pressure in the phloem of a root is normally greater than the pressure in the phloem of a leaf.

Exam 36: Transport in Vascular Plants

Which of these is not transported via the symplasm?

Which one of the following statements about transport of nutrients in phloem is False?

What would enhance water uptake by a plant cell?

According to the pressure flow hypothesis of phloem transport,

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and the Fitness of the Environment

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Control of Gene Expression

Viruses

Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Introduction to Animal Diversity

Invertebrates

Vertebrates

Plant Structure, Growth, and Development

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems

Conservation Biology and Restoration Ecology

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