Question 1

The most abundant plant cell type in ground tissue is ______ .

Accepted Answer

The answer of The most abundant plant cell type in...

Question 2

In the figure below, the line with the arrowheads indicates the cell-wall pathway for an absorbed nutrient.  
What structure actually regulates the entry of nutrients into the plant's interior?

Accepted Answer

A)  the root cap 
B)  the plasma membrane of root hair 
C)  the plasma membrane of endodermal call 
D)  the cell wall of root hair 
A)  the root cap 
B)  the plasma membrane of root hair 
C)  the plasma membrane of endodermal call 
D)  the cell wall of root hair

Question 3

Organic fertilizers

Accepted Answer

A)  supply energy to plant roots. 
B)  provide large quantities of potassium. 
C)  help soil hold water. 
D)  help rid soil of harmful minerals. 
A)  supply energy to plant roots. 
B)  provide large quantities of potassium. 
C)  help soil hold water. 
D)  help rid soil of harmful minerals.

Question 4

Companion cells

Accepted Answer

A)  are found next to guard cells. 
B)  are found in phloem. 
C)  lie next to tracheids in xylem. 
D)  are the basic components of tracheids. 
A)  are found next to guard cells. 
B)  are found in phloem. 
C)  lie next to tracheids in xylem. 
D)  are the basic components of tracheids.

Question 5

The simplest plants, lacking even vascular tissues, are the _____ .

Accepted Answer

The answer of The simplest plants, lacking even vascular tissues,...

Question 6

Like other organisms, plants are composed of proteins, lipids, carbohydrates, and nucleic acids. Based on this, which of the following would be a macronutrient?

Accepted Answer

A)  zinc 
B)  copper 
C)  iron 
D)  carbon 
A)  zinc 
B)  copper 
C)  iron 
D)  carbon

Question 7

A typical fertilizer contains no carbon because

Accepted Answer

A)  carbon is not a plant nutrient. 
B)  carbon is obtained from the atmosphere as carbon dioxide. 
C)  carbon is produced when the plant metabolizes nitrogen. 
D)  carbon is plentiful in all soils. 
A)  carbon is not a plant nutrient. 
B)  carbon is obtained from the atmosphere as carbon dioxide. 
C)  carbon is produced when the plant metabolizes nitrogen. 
D)  carbon is plentiful in all soils.

Question 8

Plants can generate the pressures needed to transport sugars produced by photosynthesis great distances by

Accepted Answer

A)  manipulating concentration of amino acids in phloem. 
B)  active transport of water. 
C)  actively transporting sugars in phloem and cells. 
D)  building up high water pressures in root hairs. 
A)  manipulating concentration of amino acids in phloem. 
B)  active transport of water. 
C)  actively transporting sugars in phloem and cells. 
D)  building up high water pressures in root hairs.

Question 9

Flowers, rather than leaves, develop when a small number of genes are turned on.

Accepted Answer

A) True 
 B)False

Question 10

Water and nutrients are taken up from soil by

Accepted Answer

A)  guard cells. 
B)  root hairs. 
C)  root caps. 
D)  xylem in tap roots. 
A)  guard cells. 
B)  root hairs. 
C)  root caps. 
D)  xylem in tap roots.

Question 11

Aphids are insects that feed on plant sap, which they obtain by puncturing xylem cells in the plant's leaves.

Accepted Answer

A) True 
 B)False

Question 12

What observation indicates that the thorns on a rose bush are modified stem?

Accepted Answer

A)  the presence of stomata 
B)  vascular bundles arranged in a ring 
C)  a centrally located vascular bundle 
D)  the presence of a cuticle 
A)  the presence of stomata 
B)  vascular bundles arranged in a ring 
C)  a centrally located vascular bundle 
D)  the presence of a cuticle

Question 13

Flowers are one of the organs of angiosperms.

Accepted Answer

A) True 
 B)False

Question 14

A plant's root cap would be found

Accepted Answer

A)  where the soil meets the air. 
B)  between the active growing area of the root and the soil. 
C)  within and just behind the active growing area of the root. 
D)  at the base of each root hair, near the main root. 
A)  where the soil meets the air. 
B)  between the active growing area of the root and the soil. 
C)  within and just behind the active growing area of the root. 
D)  at the base of each root hair, near the main root.

Question 15

Dermal hairs are more common on plants living at high elevations because at higher elevations

Accepted Answer

A)  fewer herbivores are present. 
B)  water evaporates quickly. 
C)  competition for space is more intense. 
D)  ultraviolet radiation is more intense. 
A)  fewer herbivores are present. 
B)  water evaporates quickly. 
C)  competition for space is more intense. 
D)  ultraviolet radiation is more intense.

Question 16

Plants have two types of vascular tissue, xylem, which transports ______, and phloem, which transports sugars.

Accepted Answer

The answer of Plants have two types of vascular tissue,...

Question 17

Onions are composed of modified

Accepted Answer

A)  roots. 
B)  stems. 
C)  shoots. 
D)  leaves. 
A)  roots. 
B)  stems. 
C)  shoots. 
D)  leaves.

Question 18

The uptake of nutrients by roots requires energy, because

Accepted Answer

A)  the concentrations of nutrients in the soil are greater than the concentrations in root cells. 
B)  the concentrations of nutrients in the soil are much more dilute than the concentrations in root cells. 
C)  the concentrations of nutrients in the soil and in root cells are equal. 
D)  the root hairs are covered by a waxy layer. 
A)  the concentrations of nutrients in the soil are greater than the concentrations in root cells. 
B)  the concentrations of nutrients in the soil are much more dilute than the concentrations in root cells. 
C)  the concentrations of nutrients in the soil and in root cells are equal. 
D)  the root hairs are covered by a waxy layer.

Question 19

Examine the plant in the figure below.  
The plant shown is most likely a dicot because of the presence of

Accepted Answer

A)  a taproot. 
B)  veins within the leaves. 
C)  five leaves. 
D)  both root and shoot systems. 
A)  a taproot. 
B)  veins within the leaves. 
C)  five leaves. 
D)  both root and shoot systems.

Question 20

In xylem water is transported

Accepted Answer

A)  in "cables" of a sugary water solution. 
B)  by evaporation from leaves and water "cables." 
C)  by evaporation of "cables" of water from root hairs. 
D)  through concentrated sugar solutions in phloem. 
A)  in "cables" of a sugary water solution. 
B)  by evaporation from leaves and water "cables." 
C)  by evaporation of "cables" of water from root hairs. 
D)  through concentrated sugar solutions in phloem.

Exam 31: Plant Structure, Nutrition, and Transport

The most abundant plant cell type in ground tissue is ______ .

In the figure below, the line with the arrowheads indicates the cell-wall pathway for an absorbed nutrient. What structure actually regulates the entry of nutrients into the plant's interior?

Organic fertilizers

Companion cells

The simplest plants, lacking even vascular tissues, are the _____ .

Like other organisms, plants are composed of proteins, lipids, carbohydrates, and nucleic acids. Based on this, which of the following would be a macronutrient?

A typical fertilizer contains no carbon because

Plants can generate the pressures needed to transport sugars produced by photosynthesis great distances by

Flowers, rather than leaves, develop when a small number of genes are turned on.

Water and nutrients are taken up from soil by

Aphids are insects that feed on plant sap, which they obtain by puncturing xylem cells in the plant's leaves.

What observation indicates that the thorns on a rose bush are modified stem?

Flowers are one of the organs of angiosperms.

A plant's root cap would be found

Dermal hairs are more common on plants living at high elevations because at higher elevations

Plants have two types of vascular tissue, xylem, which transports ______, and phloem, which transports sugars.

Onions are composed of modified

The uptake of nutrients by roots requires energy, because

Examine the plant in the figure below. The plant shown is most likely a dicot because of the presence of

In xylem water is transported

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

Building a Sustainable Society

Filters