Question 1

"Golden Rice" is a transgenic variety that

Accepted Answer

A) is resistant to various herbicides, making it practical to weed rice fields with those herbicides. 
B) is resistant to a virus that commonly attacks rice fields. 
C) includes bacterial genes that produce a toxin that reduces damage from insect pests. 
D) produces much larger, golden grains that increase crop yields. 
E) contains daffodil genes that increase vitamin A content. 
A) is resistant to various herbicides, making it practical to weed rice fields with those herbicides. 
B) is resistant to a virus that commonly attacks rice fields. 
C) includes bacterial genes that produce a toxin that reduces damage from insect pests. 
D) produces much larger, golden grains that increase crop yields. 
E) contains daffodil genes that increase vitamin A content. E

Question 2

Which of the following is the correct sequence of events in a pollen sac?

Accepted Answer

A) sporangia meiosis two haploid cells meiosis two pollen grains per cell 
B) pollen grain meiosis two generative cells two tube cells per pollen grain 
C) two haploid cells meiosis generative cell-tube cell fertilization pollen grain 
D) pollen grain mitosis microspores meiosis generative cell plus tube cell 
E) microsporocyte meiosis microspores mitosis two haploid cells per pollen grain 
A) sporangia meiosis two haploid cells meiosis two pollen grains per cell 
B) pollen grain meiosis two generative cells two tube cells per pollen grain 
C) two haploid cells meiosis generative cell-tube cell fertilization pollen grain 
D) pollen grain mitosis microspores meiosis generative cell plus tube cell 
E) microsporocyte meiosis microspores mitosis two haploid cells per pollen grain E

Question 3

The following questions refer to the diagram of an embryo sac of an angiosperm.
   
Figure 38.1
-Which cell(s)guide(s)the pollen tube to the egg cell?

Accepted Answer

A

Question 4

The most immediate potential benefits of introducing genetically modified crops include

Accepted Answer

A) increasing the amount of land suitable for agriculture. 
B) overcoming genetic incompatibility. 
C) increasing the frequency of self-pollination. 
D) increasing crop yield. 
E) decreasing the mutation rate of certain genes. 
A) increasing the amount of land suitable for agriculture. 
B) overcoming genetic incompatibility. 
C) increasing the frequency of self-pollination. 
D) increasing crop yield. 
E) decreasing the mutation rate of certain genes.

Question 5

For this pair of items, choose the option that best describes their relationship. (A)The GABA levels in pop2 mutant Arabidopsis flowers
(B)The GABA levels in wild-type Arabidopsis flowers

Accepted Answer

A) Item (
A) is greater than item (
B) . 
B) Item (
A) is less than item (
B) . 
C) Item (
A) is exactly or very approximately equal to item (
B) . 
D) Item (
A) may stand in more than one of the above relations to item (
B) . 
A) Item (
A) is greater than item (
B) . 
B) Item (
A) is less than item (
B) . 
C) Item (
A) is exactly or very approximately equal to item (
B) . 
D) Item (
A) may stand in more than one of the above relations to item (
B) .

Question 6

In plants, which of the following could be an advantage of sexual reproduction as opposed to asexual reproduction?

Accepted Answer

A) genetic variation 
B) mitosis 
C) stable populations 
D) rapid population increase 
E) greater longevity 
A) genetic variation 
B) mitosis 
C) stable populations 
D) rapid population increase 
E) greater longevity

Question 7

Under which conditions would asexual plants have the greatest advantage over sexual plants?

Accepted Answer

A) an environment that varies on a regular, predictable basis 
B) an environment with irregular fluctuations of conditions 
C) a relatively constant environment with infrequent disturbances 
D) a fire-maintained ecosystem 
E) an environment with many seed predators 
A) an environment that varies on a regular, predictable basis 
B) an environment with irregular fluctuations of conditions 
C) a relatively constant environment with infrequent disturbances 
D) a fire-maintained ecosystem 
E) an environment with many seed predators

Question 8

Where does meiosis occur in flowering plants?

Accepted Answer

A) megasporocyte 
B) microsporocyte 
C) endosperm 
D) pollen tube 
E) megasporocyte and microsporocyte 
A) megasporocyte 
B) microsporocyte 
C) endosperm 
D) pollen tube 
E) megasporocyte and microsporocyte

Question 9

Which of the following statements regarding flowering plants is False?

Accepted Answer

A) The sporophyte is the dominant generation. 
B) Female gametophytes develop from megaspores within the anthers. 
C) Pollination is the placing of pollen on the stigma of a carpel. 
D) The food-storing endosperm is derived from the cell that contains two polar nuclei and one sperm nucleus. 
E) Flowers produce fruits within the ovules. 
A) The sporophyte is the dominant generation. 
B) Female gametophytes develop from megaspores within the anthers. 
C) Pollination is the placing of pollen on the stigma of a carpel. 
D) The food-storing endosperm is derived from the cell that contains two polar nuclei and one sperm nucleus. 
E) Flowers produce fruits within the ovules.

Question 10

Which of the following statements is correct about the basal cell in a zygote?

Accepted Answer

A) It develops into the root of the embryo. 
B) It forms the suspensor that anchors the embryo. 
C) It results directly from the fertilization of the polar nuclei by a sperm nucleus. 
D) It divides and initiates the two cotyledons. 
E) It forms the proembryo. 
A) It develops into the root of the embryo. 
B) It forms the suspensor that anchors the embryo. 
C) It results directly from the fertilization of the polar nuclei by a sperm nucleus. 
D) It divides and initiates the two cotyledons. 
E) It forms the proembryo.

Question 11

A fruit includes

Accepted Answer

A) one or more seeds. 
B) the ovary wall. 
C) fleshy cells rich in sugars. 
D) brightly colored pigments to attract animal dispersers. 
E) both A and B 
A) one or more seeds. 
B) the ovary wall. 
C) fleshy cells rich in sugars. 
D) brightly colored pigments to attract animal dispersers. 
E) both A and B

Question 12

You are studying a plant from the Amazon that shows strong self-incompatibility. To characterize this reproductive mechanism, you would look for

Accepted Answer

A) ribonuclease (RNAase)activity in stigma cells. 
B) RNA in the plants. 
C) pollen grains with very thick walls. 
D) carpels that cannot produce eggs by meiosis. 
E) systems of wind, but not insect, pollination. 
A) ribonuclease (RNAase)activity in stigma cells. 
B) RNA in the plants. 
C) pollen grains with very thick walls. 
D) carpels that cannot produce eggs by meiosis. 
E) systems of wind, but not insect, pollination.

Question 13

Which of the following is a True statement about clonal reproduction in plants?

Accepted Answer

A) Clones of plants do not occur naturally. 
B) Cloning, although achieved in animals, has not been demonstrated in plants. 
C) Making cuttings of ornamental plants is a form of fragmentation. 
D) Reproduction of plants by cloning may be either sexual or asexual. 
E) Viable seeds can result from sexual reproduction only. 
A) Clones of plants do not occur naturally. 
B) Cloning, although achieved in animals, has not been demonstrated in plants. 
C) Making cuttings of ornamental plants is a form of fragmentation. 
D) Reproduction of plants by cloning may be either sexual or asexual. 
E) Viable seeds can result from sexual reproduction only.

Question 14

Location of the microsporangia:

Accepted Answer

A) stamen 
B) carpel 
C) petals 
D) sepals 
E) receptacle 
A) stamen 
B) carpel 
C) petals 
D) sepals 
E) receptacle

Question 15

A plant that has small, green petals is most likely to be

Accepted Answer

A) bee-pollinated. 
B) bird-pollinated. 
C) bat-pollinated. 
D) wind-pollinated. 
E) moth-pollinated. 
A) bee-pollinated. 
B) bird-pollinated. 
C) bat-pollinated. 
D) wind-pollinated. 
E) moth-pollinated.

Question 16

In the life cycle of an angiosperm, which of the following stages is diploid?

Accepted Answer

A) megaspore 
B) generative nucleus of a pollen grain 
C) polar nuclei of the embryo sac 
D) microsporocyte 
E) both megaspore and polar nuclei 
A) megaspore 
B) generative nucleus of a pollen grain 
C) polar nuclei of the embryo sac 
D) microsporocyte 
E) both megaspore and polar nuclei

Question 17

Which of these is incorrectly paired with its life-cycle generation?

Accepted Answer

A) anther-gametophyte 
B) pollen-gametophyte 
C) embryo sac-gametophyte 
D) stamen-sporophyte 
E) embryo-sporophyte 
A) anther-gametophyte 
B) pollen-gametophyte 
C) embryo sac-gametophyte 
D) stamen-sporophyte 
E) embryo-sporophyte

Question 18

In some angiosperms, other floral parts contribute to what is commonly called the fruit. Which of the following fruits is derived mostly from an enlarged receptacle?

Accepted Answer

A) pea 
B) raspberry 
C) apple 
D) pineapple 
E) peach 
A) pea 
B) raspberry 
C) apple 
D) pineapple 
E) peach

Question 19

What is the function of the integument of an ovule?

Accepted Answer

A) protect against animal predation 
B) ensure double fertilization 
C) form a seed coat 
D) direct development of the endosperm 
E) produce hormones that ensure successful pollination 
A) protect against animal predation 
B) ensure double fertilization 
C) form a seed coat 
D) direct development of the endosperm 
E) produce hormones that ensure successful pollination

Question 20

Plant biotechnologists use protoplast fusion mainly to

Accepted Answer

A) culture plant cells in vitro. 
B) asexually propagate desirable plant varieties. 
C) introduce bacterial genes into a plant genome. 
D) study the early events following fertilization. 
E) produce new hybrid species. 
A) culture plant cells in vitro. 
B) asexually propagate desirable plant varieties. 
C) introduce bacterial genes into a plant genome. 
D) study the early events following fertilization. 
E) produce new hybrid species.

Exam 38: Angiosperm Reproduction and Biotechnology

"Golden Rice" is a transgenic variety that

Which of the following is the correct sequence of events in a pollen sac?

The following questions refer to the diagram of an embryo sac of an angiosperm. Figure 38.1 -Which cell(s)guide(s)the pollen tube to the egg cell?

The most immediate potential benefits of introducing genetically modified crops include

For this pair of items, choose the option that best describes their relationship. (A)The GABA levels in pop2 mutant Arabidopsis flowers (B)The GABA levels in wild-type Arabidopsis flowers

In plants, which of the following could be an advantage of sexual reproduction as opposed to asexual reproduction?

Under which conditions would asexual plants have the greatest advantage over sexual plants?

Where does meiosis occur in flowering plants?

Which of the following statements regarding flowering plants is False?

Which of the following statements is correct about the basal cell in a zygote?

A fruit includes

You are studying a plant from the Amazon that shows strong self-incompatibility. To characterize this reproductive mechanism, you would look for

Which of the following is a True statement about clonal reproduction in plants?

Location of the microsporangia:

A plant that has small, green petals is most likely to be

In the life cycle of an angiosperm, which of the following stages is diploid?

Which of these is incorrectly paired with its life-cycle generation?

In some angiosperms, other floral parts contribute to what is commonly called the fruit. Which of the following fruits is derived mostly from an enlarged receptacle?

What is the function of the integument of an ovule?

Plant biotechnologists use protoplast fusion mainly to

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

Transport in Vascular Plants

Soil and Plant Nutrition

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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