Question 1

Much of the fruit grown in the United States,including wine grapes,is grown on

Accepted Answer

A)  plants that are tissue-cultured clones. 
B)  grafted trees. 
C)  seed-grown plants. 
D)  wild plants. 
E)  genetically engineered plants. 
A)  plants that are tissue-cultured clones. 
B)  grafted trees. 
C)  seed-grown plants. 
D)  wild plants. 
E)  genetically engineered plants.

Question 2

Which sequence represents the correct order of events in female gametophyte development?

Accepted Answer

A)  Megagametophyte $\rightarrow$ megasporocyte $\rightarrow$  megaspore 
B)  Megagametophyte $\rightarrow$  megaspore $\rightarrow$  megasporocyte 
C)  Megasporocyte $\rightarrow$  megaspore $\rightarrow$  megagametophyte 
D)  Megaspore $\rightarrow$  megasporocyte $\rightarrow$  megagametophyte 
E)  Megaspore $\rightarrow$  megagametophyte $\rightarrow$  megasporocyte 
A)  Megagametophyte $\rightarrow$ megasporocyte $\rightarrow$  megaspore 
B)  Megagametophyte $\rightarrow$  megaspore $\rightarrow$  megasporocyte 
C)  Megasporocyte $\rightarrow$  megaspore $\rightarrow$  megagametophyte 
D)  Megaspore $\rightarrow$  megasporocyte $\rightarrow$  megagametophyte 
E)  Megaspore $\rightarrow$  megagametophyte $\rightarrow$  megasporocyte

Question 3

You are observing two plots of tobacco plants,one grown from seed that was the product of self-pollination,the other grown from seed that came from a cross.The latter,on average,performs better in terms of seed production due to

Accepted Answer

A)  increased genetic diversity. 
B)  the occurrence of meiosis. 
C)  more successful pollination. 
D)  a lack of a need for pollination. 
E)  less energy being required than for self-pollination. 
A)  increased genetic diversity. 
B)  the occurrence of meiosis. 
C)  more successful pollination. 
D)  a lack of a need for pollination. 
E)  less energy being required than for self-pollination.

Question 4

What kind of enzyme might directly affect flowering?

Accepted Answer

A)  One that degrades nucleic acid 
B)  One that degrades protein 
C)  One that degrades carbohydrate 
D)  One that degrades lipid 
E)  None of the above 
A)  One that degrades nucleic acid 
B)  One that degrades protein 
C)  One that degrades carbohydrate 
D)  One that degrades lipid 
E)  None of the above

Question 5

If you wanted to produce a mutant plant that flowers in excess,which genetic manipulation would be the best choice?

Accepted Answer

A)  Delete AP1 gene. 
B)  Reduce FD expression. 
C)  Reduce FT expression. 
D)  Overexpress AP1. 
E)  Inhibit CO action. 
A)  Delete AP1 gene. 
B)  Reduce FD expression. 
C)  Reduce FT expression. 
D)  Overexpress AP1. 
E)  Inhibit CO action.

Question 6

Which of the following would most likely happen if a repressor to APETALA1 were overexpressed in shoot apical meristems throughout the plant?

Accepted Answer

A)  The plant would flower profusely regardless of environmental conditions. 
B)  The plant would flower only in the appropriate environmental conditions. 
C)  The plant would flower only if it were also provided with the products of wild-type organ identity genes. 
D)  The plant would flower only if it were also provided with phytochrome. 
E)  The plant would not flower regardless of environmental conditions. 
A)  The plant would flower profusely regardless of environmental conditions. 
B)  The plant would flower only in the appropriate environmental conditions. 
C)  The plant would flower only if it were also provided with the products of wild-type organ identity genes. 
D)  The plant would flower only if it were also provided with phytochrome. 
E)  The plant would not flower regardless of environmental conditions.

Question 7

In flowering plants,the only structure to which pollen is directly transferred is the

Accepted Answer

A)  style. 
B)  stigma. 
C)  ovary. 
D)  ovule. 
E)  micropyle. 
A)  style. 
B)  stigma. 
C)  ovary. 
D)  ovule. 
E)  micropyle.

Question 8

Suppose you are studying sexual reproduction in petunias.From what part of the flower should you extract material to study?

Accepted Answer

A)  Petal 
B)  Ovule 
C)  Stigma 
D)  Sepal 
E)  Style 
A)  Petal 
B)  Ovule 
C)  Stigma 
D)  Sepal 
E)  Style

Question 9

In a flower,the microspores are formed in the

Accepted Answer

A)  stamen. 
B)  style. 
C)  stigma. 
D)  ovule. 
E)  ovary. 
A)  stamen. 
B)  style. 
C)  stigma. 
D)  ovule. 
E)  ovary.

Question 10

Flowering is known to be triggered by

Accepted Answer

A)  phytochrome. 
B)  NO. 
C)  ethylene. 
D)  abscisin. 
E)  florigen. 
A)  phytochrome. 
B)  NO. 
C)  ethylene. 
D)  abscisin. 
E)  florigen.

Question 11

Vegetative plant parts called _______ are short,vertical stems modified for asexual reproduction.

Accepted Answer

A)  rhizomes 
B)  tubers 
C)  bulbs 
D)  stocks 
E)  stolons 
A)  rhizomes 
B)  tubers 
C)  bulbs 
D)  stocks 
E)  stolons

Question 12

An SDP plant flowers when

Accepted Answer

A)  the ratio of Pfr to Pr is sufficiently high. 
B)  the ratio of Pfr to Pr is sufficiently low. 
C)  the nights are sufficiently short. 
D)  enough far-red light has been absorbed. 
E)  Pfr equals Pr. 
A)  the ratio of Pfr to Pr is sufficiently high. 
B)  the ratio of Pfr to Pr is sufficiently low. 
C)  the nights are sufficiently short. 
D)  enough far-red light has been absorbed. 
E)  Pfr equals Pr.

Question 13

What would be the most likely effect of too little expression of CONSTANS (CO)?

Accepted Answer

A)  Flowering would occur even in the absence of appropriate environmental signals. 
B)  Flowering would be less likely to occur. 
C)  Plants would be more likely to respond to vernalization. 
D)  Plants would be less likely to respond to vernalization. 
E)  There would be no effect. 
A)  Flowering would occur even in the absence of appropriate environmental signals. 
B)  Flowering would be less likely to occur. 
C)  Plants would be more likely to respond to vernalization. 
D)  Plants would be less likely to respond to vernalization. 
E)  There would be no effect.

Question 14

Which protein is most directly and physically involved in turning on gene expression for the transition to flower production?

Accepted Answer

A)  FT 
B)  FD 
C)  CO 
D)  AP1 
E)  Both a and b 
A)  FT 
B)  FD 
C)  CO 
D)  AP1 
E)  Both a and b

Question 15

A newly discovered fruit has a thick,sweet flesh that is relished by bears.This fruit wall is

Accepted Answer

A)  nourishing the embryo. 
B)  attracting seed eaters. 
C)  attracting pollinators. 
D)  attracting seed dispersers. 
E)  ensuring that the seeds fall close to the parent plant. 
A)  nourishing the embryo. 
B)  attracting seed eaters. 
C)  attracting pollinators. 
D)  attracting seed dispersers. 
E)  ensuring that the seeds fall close to the parent plant.

Question 16

A new kind of mustard is found to flower with any length of day or night as long as it is at least two months old.What kind of plant is this?

Accepted Answer

A)  Short-day plant 
B)  Long short-day plant 
C)  Long-day plant 
D)  Short long-day plant 
E)  None of the above 
A)  Short-day plant 
B)  Long short-day plant 
C)  Long-day plant 
D)  Short long-day plant 
E)  None of the above

Question 17

Which sequence represents the correct order of events (from earliest to latest)in the reproduction of angiosperms with regard to the egg?

Accepted Answer

A)  Meiosis$\rightarrow$  egg formation $\rightarrow$  fertilization 
B)  Meiosis $\rightarrow$  fertilization $\rightarrow$  egg formation 
C)  Egg formation $\rightarrow$  fertilization $\rightarrow$ meiosis 
D)  Fertilization $\rightarrow$ meiosis $\rightarrow$ egg formation 
E)  Egg formation $\rightarrow$ meiosis $\rightarrow$ fertilization 
A)  Meiosis$\rightarrow$  egg formation $\rightarrow$  fertilization 
B)  Meiosis $\rightarrow$  fertilization $\rightarrow$  egg formation 
C)  Egg formation $\rightarrow$  fertilization $\rightarrow$ meiosis 
D)  Fertilization $\rightarrow$ meiosis $\rightarrow$ egg formation 
E)  Egg formation $\rightarrow$ meiosis $\rightarrow$ fertilization

Question 18

The process of grafting involves

Accepted Answer

A)  the interbreeding of two species of plants. 
B)  cross-fertilization between two plants. 
C)  preparing several cuttings from a plant,each of which will grow into an individual plant. 
D)  the production of xylem and phloem from the same cambium layer. 
E)  allowing a piece of one plant (the scion)to grow onto the root of another (the stock). 
A)  the interbreeding of two species of plants. 
B)  cross-fertilization between two plants. 
C)  preparing several cuttings from a plant,each of which will grow into an individual plant. 
D)  the production of xylem and phloem from the same cambium layer. 
E)  allowing a piece of one plant (the scion)to grow onto the root of another (the stock).

Question 19

Which of the following is not one of the mechanisms used by plants that flower independently of an external stimulus?

Accepted Answer

A)  An internal clock 
B)  An unknown internal signal 
C)  A genetic program insensitive to the environment 
D)  A signal pathway dependent on bud position 
E)  A photoreceptor 
A)  An internal clock 
B)  An unknown internal signal 
C)  A genetic program insensitive to the environment 
D)  A signal pathway dependent on bud position 
E)  A photoreceptor

Question 20

You are given an extract of DNA from vernalized winter wheat seeds and asked to decide if vernalization has gone on long enough for flowering to occur.In order to make this judgment,you would examine an extract of DNA under an electron microscope and look for

Accepted Answer

A)  signs of degradation. 
B)  contamination with lipids. 
C)  modified chromatin. 
D)  extra protein coating the DNA. 
E)  increased expression of FLC protein. 
A)  signs of degradation. 
B)  contamination with lipids. 
C)  modified chromatin. 
D)  extra protein coating the DNA. 
E)  increased expression of FLC protein.

Exam 27: Reproduction of Flowering Plants

Much of the fruit grown in the United States,including wine grapes,is grown on

Which sequence represents the correct order of events in female gametophyte development?

You are observing two plots of tobacco plants,one grown from seed that was the product of self-pollination,the other grown from seed that came from a cross.The latter,on average,performs better in terms of seed production due to

What kind of enzyme might directly affect flowering?

If you wanted to produce a mutant plant that flowers in excess,which genetic manipulation would be the best choice?

Which of the following would most likely happen if a repressor to APETALA1 were overexpressed in shoot apical meristems throughout the plant?

In flowering plants,the only structure to which pollen is directly transferred is the

Suppose you are studying sexual reproduction in petunias.From what part of the flower should you extract material to study?

In a flower,the microspores are formed in the

Flowering is known to be triggered by

Vegetative plant parts called _______ are short,vertical stems modified for asexual reproduction.

An SDP plant flowers when

What would be the most likely effect of too little expression of CONSTANS (CO)?

Which protein is most directly and physically involved in turning on gene expression for the transition to flower production?

A newly discovered fruit has a thick,sweet flesh that is relished by bears.This fruit wall is

A new kind of mustard is found to flower with any length of day or night as long as it is at least two months old.What kind of plant is this?

Which sequence represents the correct order of events (from earliest to latest)in the reproduction of angiosperms with regard to the egg?

The process of grafting involves

Which of the following is not one of the mechanisms used by plants that flower independently of an external stimulus?

You are given an extract of DNA from vernalized winter wheat seeds and asked to decide if vernalization has gone on long enough for flowering to occur.In order to make this judgment,you would examine an extract of DNA under an electron microscope and look for

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

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