Question 1

In an ecosystem, elements and energy are recycled.

Accepted Answer

A) True 
 B)False

Question 2

One effect of chlorofluorocarbons has been to deplete the ozone layer.

Accepted Answer

A) True 
 B)False

Question 3

Water is transported upward through the plant body in the:

Accepted Answer

A)  epidermis. 
B)  cork. 
C)  xylem. 
D)  phloem. 
E)  apical meristems. 
A)  epidermis. 
B)  cork. 
C)  xylem. 
D)  phloem. 
E)  apical meristems.

Question 4

Natural communities of organisms of wide extent, characterized by distinctive, climatically controlled groups of plants and animals, are called:

Accepted Answer

A)  biospheres. 
B)  ecosystems. 
C)  aggregations. 
D)  species. 
E)  biomes 
A)  biospheres. 
B)  ecosystems. 
C)  aggregations. 
D)  species. 
E)  biomes

Question 5

Proteinoid microspheres provide evidence that organic molecules in water can aggregate into cell-like structures

Accepted Answer

A) True 
 B)False

Question 6

The oxygen gas released in photosynthesis originates from:

Accepted Answer

A)  carbon dioxide. 
B)  water. 
C)  ozone. 
D)  sugar. 
E)  nitrates. 
A)  carbon dioxide. 
B)  water. 
C)  ozone. 
D)  sugar. 
E)  nitrates.

Question 7

What organisms are found at the base of productivity in almost all ecosystems?

Accepted Answer

A)  photosynthetic bacteria and algae only 
B)  animals only 
C)  plants and algae only 
D)  photosynthetic bacteria, algae, and plants only 
E)  photosynthetic bacteria, algae, plants, and animals 
A)  photosynthetic bacteria and algae only 
B)  animals only 
C)  plants and algae only 
D)  photosynthetic bacteria, algae, and plants only 
E)  photosynthetic bacteria, algae, plants, and animals

Question 8

Life existed on Earth as early as ______ years ago.

Accepted Answer

A)  300 to 400 thousand 
B)  3 to 4 million 
C)  300 to 400 million 
D)  3 to 4 billion 
E)  300 to 400 billion 
A)  300 to 400 thousand 
B)  3 to 4 million 
C)  300 to 400 million 
D)  3 to 4 billion 
E)  300 to 400 billion

Question 9

Prokaryotic cells differ from eukaryotic cells in that prokaryotic cells:

Accepted Answer

A)  lack chromosomes. 
B)  lack a nuclear envelope. 
C)  contain mitochondria. 
D)  contain chloroplasts. 
E)  contain genetic material. 
A)  lack chromosomes. 
B)  lack a nuclear envelope. 
C)  contain mitochondria. 
D)  contain chloroplasts. 
E)  contain genetic material.

Question 10

The greenhouse effect refers to the:

Accepted Answer

A)  depletion of the ozone layer. 
B)  increased incidence of skin cancer. 
C)  problem of feeding the world's population. 
D)  trapping of heat radiated from Earth. 
E)  disappearance of species. 
A)  depletion of the ozone layer. 
B)  increased incidence of skin cancer. 
C)  problem of feeding the world's population. 
D)  trapping of heat radiated from Earth. 
E)  disappearance of species.

Question 11

Which of the following statements about proteinoid microspheres is FALSE?

Accepted Answer

A)  They are thought to be the first forms of life. 
B)  They grow by the accumulation of additional proteinoid material. 
C)  They are cell-like structures. 
D)  They are assemblages of organic molecules. 
E)  They can be produced in the laboratory. 
A)  They are thought to be the first forms of life. 
B)  They grow by the accumulation of additional proteinoid material. 
C)  They are cell-like structures. 
D)  They are assemblages of organic molecules. 
E)  They can be produced in the laboratory.

Question 12

An example of a seed plant is a fern.

Accepted Answer

A) True 
 B)False

Question 13

An ecosystem consists of living organisms and their nonliving environment.

Accepted Answer

A) True 
 B)False

Question 14

On the early Earth, hydrothermal vents provided one source of organic molecules.

Accepted Answer

A) True 
 B)False

Question 15

Ozone in the outer layer of the atmosphere has important consequences for living things in that it:

Accepted Answer

A)  is a pollutant. 
B)  is involved directly in respiration. 
C)  aids in the aggregation of molecules. 
D)  absorbs ultraviolet rays from sunlight. 
E)  is used by autotrophs to make sugars. 
A)  is a pollutant. 
B)  is involved directly in respiration. 
C)  aids in the aggregation of molecules. 
D)  absorbs ultraviolet rays from sunlight. 
E)  is used by autotrophs to make sugars.

Question 16

Most likely, autotrophs evolved before heterotrophs.

Accepted Answer

A) True 
 B)False

Question 17

Eukaryotic cells evolved before prokaryotic cells.

Accepted Answer

A) True 
 B)False

Question 18

The food manufactured by photosynthesis is transported throughout the plant body in the:

Accepted Answer

A)  epidermis. 
B)  cork. 
C)  xylem. 
D)  phloem. 
E)  apical meristems. 
A)  epidermis. 
B)  cork. 
C)  xylem. 
D)  phloem. 
E)  apical meristems.

Question 19

A plant must first exhibit primary growth before it can exhibit secondary growth.

Accepted Answer

A) True 
 B)False

Question 20

The evolution of the seed was important because the seed confers protection and nutrition to the embryo.

Accepted Answer

A) True 
 B)False

Exam 1: Botany: an Introduction

In an ecosystem, elements and energy are recycled.

One effect of chlorofluorocarbons has been to deplete the ozone layer.

Water is transported upward through the plant body in the:

Natural communities of organisms of wide extent, characterized by distinctive, climatically controlled groups of plants and animals, are called:

Proteinoid microspheres provide evidence that organic molecules in water can aggregate into cell-like structures

The oxygen gas released in photosynthesis originates from:

What organisms are found at the base of productivity in almost all ecosystems?

Life existed on Earth as early as ______ years ago.

Prokaryotic cells differ from eukaryotic cells in that prokaryotic cells:

The greenhouse effect refers to the:

Which of the following statements about proteinoid microspheres is FALSE?

An example of a seed plant is a fern.

An ecosystem consists of living organisms and their nonliving environment.

On the early Earth, hydrothermal vents provided one source of organic molecules.

Ozone in the outer layer of the atmosphere has important consequences for living things in that it:

Most likely, autotrophs evolved before heterotrophs.

Eukaryotic cells evolved before prokaryotic cells.

The food manufactured by photosynthesis is transported throughout the plant body in the:

A plant must first exhibit primary growth before it can exhibit secondary growth.

The evolution of the seed was important because the seed confers protection and nutrition to the embryo.

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Root: Structure and Development

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

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