Question 1

The function of phloem is to ______.

Accepted Answer

A) retard water loss. 
B) transport water 
C) transport oxygen 
D) photosynthesize 
E) transport food 
A) retard water loss. 
B) transport water 
C) transport oxygen 
D) photosynthesize 
E) transport food

Question 2

Which of the following statements about photosynthetic autotrophs is FALSE?

Accepted Answer

A) They obtain their required organic compounds from external sources. 
B) They channel radiant energy into the biosphere. 
C) The word autotroph means "self-feeder." 
D) They have a complex pigment system. 
E) An example of an autotroph is a plant. 
A) They obtain their required organic compounds from external sources. 
B) They channel radiant energy into the biosphere. 
C) The word autotroph means "self-feeder." 
D) They have a complex pigment system. 
E) An example of an autotroph is a plant.

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

A seed is composed of three parts:

Accepted Answer

A) root, stem, and leaves. 
B) xylem, phloem, and seed coat. 
C) seed coat, embryo, and food supply. 
D) apical meristems, lateral meristems, and seed coat. 
E) spore coat, embryo, and vascular system. 
A) root, stem, and leaves. 
B) xylem, phloem, and seed coat. 
C) seed coat, embryo, and food supply. 
D) apical meristems, lateral meristems, and seed coat. 
E) spore coat, embryo, and vascular system.

Question 5

In all ecosystems, heterotrophs are completely dependent on the productivity of all the following groups of organisms EXCEPT:

Accepted Answer

A) animals. 
B) autotrophs. 
C) photosynthetic bacteria. 
D) plants. 
E) algae 
A) animals. 
B) autotrophs. 
C) photosynthetic bacteria. 
D) plants. 
E) algae

Question 6

The process of photosynthesis results in the formation of two substances essential to our existence:

Accepted Answer

A) chlorophyll and water. 
B) electrons and protons. 
C) sugar and oxygen. 
D) sugar and water. 
E) chlorophyll and oxygen. 
A) chlorophyll and water. 
B) electrons and protons. 
C) sugar and oxygen. 
D) sugar and water. 
E) chlorophyll and oxygen.

Question 7

Primary growth results in a thickening of the stem and root.

Accepted Answer

A) True 
 B)False

Question 8

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 9

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 10

Which of the following statements concerning primitive cells is FALSE?

Accepted Answer

A) They used organic molecules to satisfy their energy requirements. 
B) They constructed new cells from organic molecules made via photosynthesis. 
C) They acquired the ability to grow. 
D) They acquired the ability to reproduce. 
E) They acquired the ability to pass on their characteristics to subsequent generations 
A) They used organic molecules to satisfy their energy requirements. 
B) They constructed new cells from organic molecules made via photosynthesis. 
C) They acquired the ability to grow. 
D) They acquired the ability to reproduce. 
E) They acquired the ability to pass on their characteristics to subsequent generations

Question 11

On Mars, there is evidence for the presence of water in the form of______.

Accepted Answer

A) ice only. 
B) liquid water only 
C) snow only 
D) ice and liquid water but not snow 
E) ice, liquid water and snow 
A) ice only. 
B) liquid water only 
C) snow only 
D) ice and liquid water but not snow 
E) ice, liquid water and snow

Question 12

Atmospheric levels of oxygen gas approached modern levels approximately ______ years ago.

Accepted Answer

A) 5 billion 
B) 500 million 
C) 50 million 
D) 5 million 
E) 500 thousand 
A) 5 billion 
B) 500 million 
C) 50 million 
D) 5 million 
E) 500 thousand

Question 13

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 14

Which of the following statements concerning stomata is FALSE?.

Accepted Answer

A) They form a waxy covering on all aboveground portions of the plant. 
B) They consist of a pair of guard cells. 
C) They are found in the epidermis. 
D) They help maintain a balance between water loss and oxygen and carbon dioxide requirements. 
E) They open and close. 
A) They form a waxy covering on all aboveground portions of the plant. 
B) They consist of a pair of guard cells. 
C) They are found in the epidermis. 
D) They help maintain a balance between water loss and oxygen and carbon dioxide requirements. 
E) They open and close.

Question 15

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 16

In an ecosystem, elements and energy are recycled.

Accepted Answer

A) True 
 B)False

Question 17

Apical meristems are responsible for the extension of the plant body.

Accepted Answer

A) True 
 B)False

Question 18

The first cells on Earth were most likely:

Accepted Answer

A) bacteria. 
B) autotrophs. 
C) eukaryotes. 
D) proteinoid microspheres. 
E) archaeans. 
A) bacteria. 
B) autotrophs. 
C) eukaryotes. 
D) proteinoid microspheres. 
E) archaeans.

Question 19

Most likely, autotrophs evolved before heterotrophs.

Accepted Answer

A) True 
 B)False

Question 20

The activity of the ______ results in a thickening of stems, branches, and roots.

Accepted Answer

A) xylem and phloem regions 
B) epidermal regions 
C) vascular systems 
D) lateral meristems 
E) apical meristems 
A) xylem and phloem regions 
B) epidermal regions 
C) vascular systems 
D) lateral meristems 
E) apical meristems

Exam 1: Botany: an Introduction

The function of phloem is to ______.

Which of the following statements about photosynthetic autotrophs is FALSE?

Water is transported upward through the plant body in the:

A seed is composed of three parts:

In all ecosystems, heterotrophs are completely dependent on the productivity of all the following groups of organisms EXCEPT:

The process of photosynthesis results in the formation of two substances essential to our existence:

Primary growth results in a thickening of the stem and root.

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

Which of the following statements about proteinoid microspheres is FALSE?

Which of the following statements concerning primitive cells is FALSE?

On Mars, there is evidence for the presence of water in the form of______.

Atmospheric levels of oxygen gas approached modern levels approximately ______ years ago.

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

Which of the following statements concerning stomata is FALSE?.

Prokaryotic cells differ from eukaryotic cells in that prokaryotic cells:

In an ecosystem, elements and energy are recycled.

Apical meristems are responsible for the extension of the plant body.

The first cells on Earth were most likely:

Most likely, autotrophs evolved before heterotrophs.

The activity of the ______ results in a thickening of stems, branches, and roots.

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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