Question 1

Which of the following is true about vegetative reproduction?

Accepted Answer

A) It involves both meiosis and mitosis to produce haploid and diploid cells. 
B) It produces vegetables and not fruits. 
C) It involves meiosis only. 
D) It can lead to genetically altered forms of the species. 
E) It produces clones of the parent plant. 
A) It involves both meiosis and mitosis to produce haploid and diploid cells. 
B) It produces vegetables and not fruits. 
C) It involves meiosis only. 
D) It can lead to genetically altered forms of the species. 
E) It produces clones of the parent plant.

Question 2

The following questions refer to the diagram of an embryo sac of an angiosperm shown below.
  
-What is the function of the triploid endosperm?

Accepted Answer

A) to produce sperm for fertilization 
B) to be the food-storing tissue of the seed 
C) to absorb water for the developing seed 
D) to divide meiotically to produce 3 haploid gametes 
E) to produce the seed coat 
A) to produce sperm for fertilization 
B) to be the food-storing tissue of the seed 
C) to absorb water for the developing seed 
D) to divide meiotically to produce 3 haploid gametes 
E) to produce the seed coat

Question 3

Double fertilization means that

Accepted Answer

A) flowers must be pollinated twice to yield fruits and seeds. 
B) every egg must receive two sperm to produce an embryo. 
C) one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei. 
D) the egg of the embryo sac is diploid. 
E) every sperm has two nuclei. 
A) flowers must be pollinated twice to yield fruits and seeds. 
B) every egg must receive two sperm to produce an embryo. 
C) one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei. 
D) the egg of the embryo sac is diploid. 
E) every sperm has two nuclei.

Question 4

Retaining the zygote on the living gametophyte of land plants

Accepted Answer

A) protects the zygote from herbivores. 
B) evolved concurrently with pollen. 
C) helps in dispersal of the zygote. 
D) allows it to be nourished by the parent plant. 
A) protects the zygote from herbivores. 
B) evolved concurrently with pollen. 
C) helps in dispersal of the zygote. 
D) allows it to be nourished by the parent plant.

Question 5

Which of the following best describes the ploidy level of a fertilized embryo sac?

Accepted Answer

A) All cells are diploid. 
B) All cells are triploid. 
C) All cells are polyploid. 
D) The ploidy level varies among species. 
E) There are haploid, diploid, and triploid cells. 
A) All cells are diploid. 
B) All cells are triploid. 
C) All cells are polyploid. 
D) The ploidy level varies among species. 
E) There are haploid, diploid, and triploid cells.

Question 6

Use the following information to answer the questions below.
Millions of people suffer from hunger and malnutrition.With artificial selection,farmers have improved the yields of many agricultural crops.More recently,plant biotechnology/genetic engineering has been suggested as a means to further improve crops and combat hunger.
-Plant biotechnology,like all technologies,has benefits and risks.Thinking back on what you know about evolution and ecology,you know there are several serious environmental concerns with respect to transgenic crops.Which of the following is not an environmental concern of transgenic crops?

Accepted Answer

A) Genetically modified crops can be engineered to produce higher yields. 
B) Herbicide-resistant crops can be sprayed as often as desired. 
C) Genetically modified crops that produce their own insecticide may potentially harm non-target organisms. 
D) Insects show resistance to Bt toxin. 
E) Genetically modified crops may produce hybridize with wild relatives. 
A) Genetically modified crops can be engineered to produce higher yields. 
B) Herbicide-resistant crops can be sprayed as often as desired. 
C) Genetically modified crops that produce their own insecticide may potentially harm non-target organisms. 
D) Insects show resistance to Bt toxin. 
E) Genetically modified crops may produce hybridize with wild relatives.

Question 7

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.

Exam 38: Angiosperm Reproduction and Biotechnology

Which of the following is true about vegetative reproduction?

The following questions refer to the diagram of an embryo sac of an angiosperm shown below. -What is the function of the triploid endosperm?

Double fertilization means that

Retaining the zygote on the living gametophyte of land plants

Which of the following best describes the ploidy level of a fertilized embryo sac?

Which of the following statements regarding flowering plants is false?

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

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