Question 1

Budding is a form of grafting widely used commercially.

Accepted Answer

A) True 
 B)False

Question 2

In grafting, the rooted part is known as the

Accepted Answer

A)  scion. 
B)  interstock. 
C)  stock. 
D)  cambium. 
E)  inarch. 
A)  scion. 
B)  interstock. 
C)  stock. 
D)  cambium. 
E)  inarch.

Question 3

Mutations can be induced by chemicals.

Accepted Answer

A) True 
 B)False

Question 4

The process of gene "splicing" begins with

Accepted Answer

A)  the breaking of linkages between adjacent nucleotides of plasmids. 
B)  unpairing nucleotides in linear strands. 
C)  linking DNA fragments with repair enzymes. 
D)  insertion of recombinant plasmids into bacterial cells. 
E)  isolation and purification of the foreign gene (DN
A)  that is to be cloned. 
A)  the breaking of linkages between adjacent nucleotides of plasmids. 
B)  unpairing nucleotides in linear strands. 
C)  linking DNA fragments with repair enzymes. 
D)  insertion of recombinant plasmids into bacterial cells. 
E)  isolation and purification of the foreign gene (DN
A)  that is to be cloned.

Question 5

Tip-layering and air-layering are nearly identical techniques.

Accepted Answer

A) True 
 B)False

Question 6

_____________ are plants with specific genes from other organisms (from viruses to humans)inserted into the genome.

Accepted Answer

A)  Hybrid plants 
B)  Polyploid plants 
C)  Somatic hybrid plants 
D)  Transgenic plants 
E)  Heirloom plants 
A)  Hybrid plants 
B)  Polyploid plants 
C)  Somatic hybrid plants 
D)  Transgenic plants 
E)  Heirloom plants

Question 7

Outcrossing involves repeated self-pollination.

Accepted Answer

A) True 
 B)False

Question 8

Protoplast fusion can only take place after the cell walls have been digested.

Accepted Answer

A) True 
 B)False

Question 9

Rhizomes, runners, and potato tubers can be used for asexual propagation by cutting them into sections with each section having a node.

Accepted Answer

A) True 
 B)False

Question 10

In the future, transformed plants may produce viruses that act as vaccines against viral diseases.

Accepted Answer

A) True 
 B)False

Question 11

The type of grafting best suited for saving a tree that has been girdled is ________________________.(Appendix 4)

Accepted Answer

A)  whip grafting 
B)  splice grafting 
C)  cleft grafting 
D)  bridge grafting 
E)  bud grafting 
A)  whip grafting 
B)  splice grafting 
C)  cleft grafting 
D)  bridge grafting 
E)  bud grafting

Question 12

Recombinant plasmids are made by

Accepted Answer

A)  machines called protein sequencers. 
B)  mixing large numbers of DNA segments with fragments of desired DNA. 
C)  isolating them from other plasmids. 
D)  joining two different plasmids with repair enzymes. 
E)  producing mutant bacteria with X-radiation. 
A)  machines called protein sequencers. 
B)  mixing large numbers of DNA segments with fragments of desired DNA. 
C)  isolating them from other plasmids. 
D)  joining two different plasmids with repair enzymes. 
E)  producing mutant bacteria with X-radiation.

Question 13

Plant breeding is ___________________.

Accepted Answer

A)  accelerated evolution guided by humans who are selecting those features beneficial to them 
B)  picking out the best products of natural selection 
C)  intended to increase genetic diversity of plants in populations 
D)  a field that just started with the development of molecular genetics 
E)  none of these 
A)  accelerated evolution guided by humans who are selecting those features beneficial to them 
B)  picking out the best products of natural selection 
C)  intended to increase genetic diversity of plants in populations 
D)  a field that just started with the development of molecular genetics 
E)  none of these

Question 14

A gene pool consists of

Accepted Answer

A)  a liquid suspension of plasmids. 
B)  DNA fragments that have been broken by restriction enzymes. 
C)  an aquatic environment inhabited by large numbers of mutant organisms. 
D)  all the genes of all the individuals in a population. 
E)  genetically engineered organisms. 
A)  a liquid suspension of plasmids. 
B)  DNA fragments that have been broken by restriction enzymes. 
C)  an aquatic environment inhabited by large numbers of mutant organisms. 
D)  all the genes of all the individuals in a population. 
E)  genetically engineered organisms.

Question 15

Gene banks are locations where _____________________.

Accepted Answer

A)  national agencies maintain stocks of the most common plants grown in that country 
B)  plant breeders can deposit the germplasm of their new hybrids and crop varieties 
C)  plant breeders can borrow germplasm 
D)  samples of wild relatives and local populations (land races) of domesticated plants can be studied and stored for future incorporation into new breeds of crops 
E)  patented seeds can be stored 
A)  national agencies maintain stocks of the most common plants grown in that country 
B)  plant breeders can deposit the germplasm of their new hybrids and crop varieties 
C)  plant breeders can borrow germplasm 
D)  samples of wild relatives and local populations (land races) of domesticated plants can be studied and stored for future incorporation into new breeds of crops 
E)  patented seeds can be stored

Question 16

Six plant species provide 80% of the calories consumed by humans worldwide.

Accepted Answer

A) True 
 B)False

Question 17

Mericloning, the cloning of meristems, significantly reduces the lenfth of time it takes for orchid plants to flower.

Accepted Answer

A) True 
 B)False

Question 18

Genetic diversity in wild relatives and local populations of cultivated plant species is critically important to plant breeders because _____________.

Accepted Answer

A)  crop seeds should be variable 
B)  it is the source of disease and pest resistance that can be bred into new crop varieties 
C)  modern agriculture relies on low diversity in crop varieties 
D)  they are searching for new crop species to develop 
E)  they have been domesticating approximately one new crop species per year since 1900 
A)  crop seeds should be variable 
B)  it is the source of disease and pest resistance that can be bred into new crop varieties 
C)  modern agriculture relies on low diversity in crop varieties 
D)  they are searching for new crop species to develop 
E)  they have been domesticating approximately one new crop species per year since 1900

Question 19

______ is the only major crop that was domesticated in the present US.

Accepted Answer

A)  Tobacco 
B)  Corn 
C)  Squash 
D)  Sunflower 
E)  Rice 
A)  Tobacco 
B)  Corn 
C)  Squash 
D)  Sunflower 
E)  Rice

Question 20

When a stock has a considerably greater diameter than that of a scion, cleft grafting is the most commonly employed grafting method.

Accepted Answer

A) True 
 B)False

Exam 14: Plant Breeding and Propagation

Budding is a form of grafting widely used commercially.

In grafting, the rooted part is known as the

Mutations can be induced by chemicals.

The process of gene "splicing" begins with

Tip-layering and air-layering are nearly identical techniques.

_____________ are plants with specific genes from other organisms (from viruses to humans)inserted into the genome.

Outcrossing involves repeated self-pollination.

Protoplast fusion can only take place after the cell walls have been digested.

Rhizomes, runners, and potato tubers can be used for asexual propagation by cutting them into sections with each section having a node.

In the future, transformed plants may produce viruses that act as vaccines against viral diseases.

The type of grafting best suited for saving a tree that has been girdled is ________________________.(Appendix 4)

Recombinant plasmids are made by

Plant breeding is ___________________.

A gene pool consists of

Gene banks are locations where _____________________.

Six plant species provide 80% of the calories consumed by humans worldwide.

Mericloning, the cloning of meristems, significantly reduces the lenfth of time it takes for orchid plants to flower.

Genetic diversity in wild relatives and local populations of cultivated plant species is critically important to plant breeders because _____________.

______ is the only major crop that was domesticated in the present US.

When a stock has a considerably greater diameter than that of a scion, cleft grafting is the most commonly employed grafting method.

What Is Plant Biology

The Nature of Life

Cells

Tissues

Roots and Soils

Stems

Leaves

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Growth

Meiosis and Alternation of Generation

Genetics

Evolution

Plant Names and Classification

Domain Kingdombacteria, Domain King-Domarchaea, and Viruses

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants: Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Ecology

Biomes

Filters