Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

When people "domesticate" plants, we ________.

Accepted Answer

A)  harvest them from wild populations 
B)  plant them in greenhouses 
C)  tame them 
D)  alter them genetically to meet our needs 
E)  claim the land where populations are found and let them continue to grow there 
A)  harvest them from wild populations 
B)  plant them in greenhouses 
C)  tame them 
D)  alter them genetically to meet our needs 
E)  claim the land where populations are found and let them continue to grow there

Question 3

Tissue culture is used ________.

Accepted Answer

A)  to rapidly increase the number of orchids for commercial sale 
B)  to culture protoplasts and propagate somatic hybrids 
C)  to grow plants from transgenic experiments 
D)  to propagate desirable somatic mutants such as naval oranges or seedless grapes 
E)  All of these answers are correct. 
A)  to rapidly increase the number of orchids for commercial sale 
B)  to culture protoplasts and propagate somatic hybrids 
C)  to grow plants from transgenic experiments 
D)  to propagate desirable somatic mutants such as naval oranges or seedless grapes 
E)  All of these answers are correct.

Question 4

Restriction enzymes squeeze DNA strands into narrow strips.

Accepted Answer

A) True 
 B)False

Question 5

________ 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 6

Grafting techniques are of relatively recent origin, being first practiced in the 1800's.

Accepted Answer

A) True 
 B)False

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

Genetic engineering involves the construction of new apical meristems.

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

Autoclaves are used to produce autoploids.

Accepted Answer

A) True 
 B)False

Question 11

It is of no particular importance which end of a cutting is inserted in the ground.

Accepted Answer

A) True 
 B)False

Question 12

An heirloom variety has undergone inbreeding to create a genetically uniform variety.

Accepted Answer

A) True 
 B)False

Question 13

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 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

Methods for improving existing varieties of crop plants do NOT include ________.

Accepted Answer

A)  use of mutant forms 
B)  hybridization 
C)  use of polyploids 
D)  pruning 
E)  tissue culture 
A)  use of mutant forms 
B)  hybridization 
C)  use of polyploids 
D)  pruning 
E)  tissue culture

Question 16

High-yielding crops produced during the green revolution require less water and fertilizer than previously produced crops.

Accepted Answer

A) True 
 B)False

Question 17

Circular extrachromosomal pieces of DNA in bacteria are called

Accepted Answer

A)  prions. 
B)  plasmids. 
C)  capsids. 
D)  chromosomes. 
E)  Both prions and capsids are correct. 
A)  prions. 
B)  plasmids. 
C)  capsids. 
D)  chromosomes. 
E)  Both prions and capsids are correct.

Question 18

A plant resulting from the fusion of two protoplasts from different species is called a somatic hybrid.

Accepted Answer

A) True 
 B)False

Question 19

Repair enzymes link DNA fragments together.

Accepted Answer

A) True 
 B)False

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 14: Plant Breeding and Propagation

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

When people "domesticate" plants, we ________.

Tissue culture is used ________.

Restriction enzymes squeeze DNA strands into narrow strips.

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

Grafting techniques are of relatively recent origin, being first practiced in the 1800's.

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

Genetic engineering involves the construction of new apical meristems.

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

Autoclaves are used to produce autoploids.

It is of no particular importance which end of a cutting is inserted in the ground.

An heirloom variety has undergone inbreeding to create a genetically uniform variety.

Gene banks are locations where ________.

A gene pool consists of

Methods for improving existing varieties of crop plants do NOT include ________.

High-yielding crops produced during the green revolution require less water and fertilizer than previously produced crops.

Circular extrachromosomal pieces of DNA in bacteria are called

A plant resulting from the fusion of two protoplasts from different species is called a somatic hybrid.

Repair enzymes link DNA fragments together.

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

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 Kingdom Bacteria, Domain Kingdom Archaea, 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