Question 1

Which of the following statements applies to the endosperm in angiosperms?

Accepted Answer

A) Its nutrients may be absorbed by the cotyledons in the seeds of eudicots. 
B) It develops from a haploid cell. 
C) Its nutrients are digested before embryo development. 
D) It develops from the fertilized egg. 
E) It is only fully developed in monocot seeds. 
A) Its nutrients may be absorbed by the cotyledons in the seeds of eudicots. 
B) It develops from a haploid cell. 
C) Its nutrients are digested before embryo development. 
D) It develops from the fertilized egg. 
E) It is only fully developed in monocot seeds.

Question 2

Which of the following types of plants are incapable of self-pollination?

Accepted Answer

A) dioecious 
B) monoecious 
C) complete 
D) wind-pollinated 
E) insect-pollinated 
A) dioecious 
B) monoecious 
C) complete 
D) wind-pollinated 
E) insect-pollinated

Question 3

Which of the following 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 4

Which of the following is the male gametophyte of a flowering plant?

Accepted Answer

A) ovule 
B) microsporocyte 
C) pollen grain 
D) embryo sac 
E) stamen 
A) ovule 
B) microsporocyte 
C) pollen grain 
D) embryo sac 
E) stamen

Question 5

Where and by which process are sperm cells formed in plants?

Accepted Answer

A) meiosis in pollen grains 
B) meiosis in anthers 
C) mitosis in male gametophyte pollen tube 
D) mitosis in the micropyle 
E) mitosis in the embryo sac 
A) meiosis in pollen grains 
B) meiosis in anthers 
C) mitosis in male gametophyte pollen tube 
D) mitosis in the micropyle 
E) mitosis in the embryo sac

Question 6

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 7

What effects would occur in a mutant of Arabidopsis that cannot synthesize GABA within its flowers?

Accepted Answer

A) Pollen tube growth would not be directed toward the egg, and fertilization would not occur. 
B) The seeds from the flowers would be unable to break dormancy. 
C) The pollen grain would not form a pollen tube due to incompatibility with the pollen tube. 
D) The length of the style would be increased to the point where the growing pollen tube would be unable to reach the synergids. 
A) Pollen tube growth would not be directed toward the egg, and fertilization would not occur. 
B) The seeds from the flowers would be unable to break dormancy. 
C) The pollen grain would not form a pollen tube due to incompatibility with the pollen tube. 
D) The length of the style would be increased to the point where the growing pollen tube would be unable to reach the synergids.

Question 8

The following questions refer to the diagram of an embryo sac of an angiosperm shown below.
  
-Based on the above figure, which cell(s)become(s)the triploid endosperm?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 9

In flowering plants, pollen is released from the

Accepted Answer

A) anther. 
B) stigma. 
C) carpel. 
D) filament. 
E) pollen tube. 
A) anther. 
B) stigma. 
C) carpel. 
D) filament. 
E) pollen tube.

Question 10

The pollen tube (see the above figure)grows in the ________ and is directed towards the micropyle by chemical attractants of the ________

Accepted Answer

A) style, synergids 
B) style, antipodal cells 
C) female gametophyte, polar nuclei 
D) filament, megaspore 
E) style, egg 
A) style, synergids 
B) style, antipodal cells 
C) female gametophyte, polar nuclei 
D) filament, megaspore 
E) style, egg

Question 11

Which of the following statements is true about fruits?

Accepted Answer

A) Fruits form from megasporangia and integuments. 
B) All fruits contain seeds. 
C) Green beans, corn, tomatoes, and wheat are all vegetables. 
D) Pollination is always required for fruit maturation. 
E) During fruit development, the wall of the ovary becomes the integument. 
A) Fruits form from megasporangia and integuments. 
B) All fruits contain seeds. 
C) Green beans, corn, tomatoes, and wheat are all vegetables. 
D) Pollination is always required for fruit maturation. 
E) During fruit development, the wall of the ovary becomes the integument.

Question 12

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 13

What is the first step in the germination of a seed?

Accepted Answer

A) pollination 
B) fertilization 
C) imbibition 
D) hydrolysis of starch and other food reserves 
E) emergence of the radicle 
A) pollination 
B) fertilization 
C) imbibition 
D) hydrolysis of starch and other food reserves 
E) emergence of the radicle

Question 14

Three mitotic divisions within the female gametophyte of the megaspore produce

Accepted Answer

A) three antipodal cells, two polar nuclei, one egg, and two synergids. 
B) the triple fusion nucleus. 
C) three pollen grains. 
D) two antipodal cells, two polar nuclei, two eggs, and two synergids. 
E) a tube nucleus, a generative cell, and a sperm cell. 
A) three antipodal cells, two polar nuclei, one egg, and two synergids. 
B) the triple fusion nucleus. 
C) three pollen grains. 
D) two antipodal cells, two polar nuclei, two eggs, and two synergids. 
E) a tube nucleus, a generative cell, and a sperm cell.

Question 15

One major potential benefit resulting from protoplast fusion experiments in agriculturally relevant species is

Accepted Answer

A) there is an increased potential of hopeful mutants. 
B) species that are normally sexually incompatible can sometimes be successfully fused, producing offspring with traits of both parent species. 
C) many new species can be produced in a short period of time. 
D) deleterious traits are often removed by this process. 
E) genetically unrelated species can be successfully combined to produce new species with much larger genomes and adaptive potentials. 
A) there is an increased potential of hopeful mutants. 
B) species that are normally sexually incompatible can sometimes be successfully fused, producing offspring with traits of both parent species. 
C) many new species can be produced in a short period of time. 
D) deleterious traits are often removed by this process. 
E) genetically unrelated species can be successfully combined to produce new species with much larger genomes and adaptive potentials.

Question 16

"Golden Rice"

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 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 larger, golden grains that increase crop yields. 
E) contains daffodil genes that increase vitamin A content.

Question 17

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 18

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 19

A parent with an S₁S₂ genotype exhibiting gametophytic self-incompatibility could potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Accepted Answer

A) S₁S₃ 
B) S₂S₃ 
C) S₁S₄ 
D) S₂S₄ 
E) Half of all the pollen grains could be successful. 
A) S₁S₃ 
B) S₂S₃ 
C) S₁S₄ 
D) S₂S₄ 
E) Half of all the pollen grains could be successful.

Question 20

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.

Exam 38: Angiosperm Reproduction and Biotechnology

Which of the following statements applies to the endosperm in angiosperms?

Which of the following types of plants are incapable of self-pollination?

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

Which of the following is the male gametophyte of a flowering plant?

Where and by which process are sperm cells formed in plants?

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

What effects would occur in a mutant of Arabidopsis that cannot synthesize GABA within its flowers?

The following questions refer to the diagram of an embryo sac of an angiosperm shown below. -Based on the above figure, which cell(s)become(s)the triploid endosperm?

In flowering plants, pollen is released from the

The pollen tube (see the above figure)grows in the ________ and is directed towards the micropyle by chemical attractants of the ________

Which of the following statements is true about fruits?

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

What is the first step in the germination of a seed?

Three mitotic divisions within the female gametophyte of the megaspore produce

One major potential benefit resulting from protoplast fusion experiments in agriculturally relevant species is

"Golden Rice"

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?

Which of the following statements regarding flowering plants is false?

A parent with an S₁S₂ genotype exhibiting gametophytic self-incompatibility could potentially fertilize which of the following plant genotypes of the same species with pollen grains?

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

Introduction: Evolution and Themes of Biology

The Chemical Context of Life

Water and Life

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 and Fermentation

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

Regulation of Gene Expression

Viruses

Dna Tools and 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 Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and 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 Signalling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behaviour

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

Filters

The pollen tube (see the above figure)grows in the and is directed towards the micropyle by chemical attractants of the