Question 1

Double fertilization results in the formation of

Accepted Answer

A)  two diploid embryos. 
B)  one diploid embryo and a diploid endosperm. 
C)  two diploid embryos and a haploid endosperm. 
D)  one diploid embryo and a triploid endosperm. 
E)  two diploid embryos and a diploid seed coat. 
A)  two diploid embryos. 
B)  one diploid embryo and a diploid endosperm. 
C)  two diploid embryos and a haploid endosperm. 
D)  one diploid embryo and a triploid endosperm. 
E)  two diploid embryos and a diploid seed coat.

Question 2

Which of the following conditions is necessary for successful grafting?

Accepted Answer

A)  Each section must be able to form roots. 
B)  The grafted section must be able to form seeds. 
C)  Fusion of the two vascular tissues must occur. 
D)  Fusion of the two cambia tissues must occur. 
E)  Each section must be derived from the same species. 
A)  Each section must be able to form roots. 
B)  The grafted section must be able to form seeds. 
C)  Fusion of the two vascular tissues must occur. 
D)  Fusion of the two cambia tissues must occur. 
E)  Each section must be derived from the same species.

Question 3

A benefit of sexual reproduction in plants is

Accepted Answer

A)  the greater number of progeny that results. 
B)  ease of pollination. 
C)  the creation of new combinations of genes and diverse phenotypes. 
D)  that the haploid plant becomes diploid. 
E)  farther dispersal of progeny. 
A)  the greater number of progeny that results. 
B)  ease of pollination. 
C)  the creation of new combinations of genes and diverse phenotypes. 
D)  that the haploid plant becomes diploid. 
E)  farther dispersal of progeny.

Question 4

The transition a plant makes from the vegetative state to the flowering state

Accepted Answer

A)  occurs at the same time of year in all angiosperms. 
B)  always results in the cessation of vegetative growth. 
C)  involves major developmental and gene expression changes. 
D)  is insensitive to environmental cues. 
E)  results in floral meristems that show indeterminate growth. 
A)  occurs at the same time of year in all angiosperms. 
B)  always results in the cessation of vegetative growth. 
C)  involves major developmental and gene expression changes. 
D)  is insensitive to environmental cues. 
E)  results in floral meristems that show indeterminate growth.

Question 5

Asexual reproduction is the best strategy for plants

Accepted Answer

A)  that are well adapted to a stable environment. 
B)  as winter approaches. 
C)  when new genes must be introduced. 
D)  that have underground stems. 
E)  that have low seed production during a particular season. 
A)  that are well adapted to a stable environment. 
B)  as winter approaches. 
C)  when new genes must be introduced. 
D)  that have underground stems. 
E)  that have low seed production during a particular season.

Question 6

Quaking aspen trees usually reproduce asexually in Colorado but sexually in New England. From this information, what can one hypothesize about the stability of the two environments in which the aspens grow?

Accepted Answer

A)  No hypothesis can be developed from this information. 
B)  The Colorado aspens grow in a more stable environment. 
C)  The New England aspens grow in a more stable environment. 
D)  Both environments are stable. 
E)  Neither environment is stable. 
A)  No hypothesis can be developed from this information. 
B)  The Colorado aspens grow in a more stable environment. 
C)  The New England aspens grow in a more stable environment. 
D)  Both environments are stable. 
E)  Neither environment is stable.

Question 7

Bamboo reproduces by means of

Accepted Answer

A)  rhizomes. 
B)  tubers. 
C)  corms. 
D)  stolons. 
E)  wind-dispersed seed germination. 
A)  rhizomes. 
B)  tubers. 
C)  corms. 
D)  stolons. 
E)  wind-dispersed seed germination.

Question 8

Compare and contrast asexual and sexual reproduction in plants. In which category does self-fertilization belong?

Accepted Answer

Asexual reproduction does not involve me

Question 9

Florigen is

Accepted Answer

A)  an RNA copy of the FT gene. 
B)  transported in the xylem. 
C)  a small protein synthesized in stems. 
D)  a small protein made in leaves. 
E)  coded for by the Constans gene. 
A)  an RNA copy of the FT gene. 
B)  transported in the xylem. 
C)  a small protein synthesized in stems. 
D)  a small protein made in leaves. 
E)  coded for by the Constans gene.

Question 10

Describe double fertilization. What is the ploidy level of the products of double fertilization?

Accepted Answer

Double fertilization occurs when the two

Question 11

Which of the following is not a part of an angiosperm seed?

Accepted Answer

A)  Seed coat 
B)  Cotyledon 
C)  Shoot apex 
D)  Style 
E)  Endosperm 
A)  Seed coat 
B)  Cotyledon 
C)  Shoot apex 
D)  Style 
E)  Endosperm

Question 12

The male gametophyte in seed plants is the _______; the mature female gametophyte is an embryo sac with _______ haploid nuclei.

Accepted Answer

The answer of The male gametophyte in seed plants is...

Question 13

Describe egg formation in angiosperms, beginning with the sporophyte.

Accepted Answer

In angiosperms, egg formation begins wit

Question 14

An apomictic seed contains an embryo that is

Accepted Answer

A)  produced when two sperm fertilize one egg. 
B)  developed from one egg alone. 
C)  the result of parental self-fertilization. 
D)  genetically identical to its parent. 
E)  homozygous for most genetic traits. 
A)  produced when two sperm fertilize one egg. 
B)  developed from one egg alone. 
C)  the result of parental self-fertilization. 
D)  genetically identical to its parent. 
E)  homozygous for most genetic traits.

Question 15

After setting the correct photoperiod, the managers of a greenhouse still do not have blooming roses. Which of the following possibilities would most likely have contributed to the problem?

Accepted Answer

A)  The heating system allowed for fluctuations in temperature between 20°C and 25°C. 
B)  The furnace mechanic accidentally turned off the lights for an hour two days in a row. 
C)  The cleaning crew turned the lights on for an hour three nights in a row. 
D)  All of the above 
E)  None of the above 
A)  The heating system allowed for fluctuations in temperature between 20°C and 25°C. 
B)  The furnace mechanic accidentally turned off the lights for an hour two days in a row. 
C)  The cleaning crew turned the lights on for an hour three nights in a row. 
D)  All of the above 
E)  None of the above

Question 16

Vegetative reproduction

Accepted Answer

A)  may be advantageous to a plant growing in an environment to which it is well adapted. 
B)  may be advantageous to plants exposed to new environmental challenges. 
C)  discourages the rapid spread of plants such as bamboo. 
D)  promotes genetic diversity plants in the culture of some agriculturally important plants. 
E)  is not used in agriculture. 
A)  may be advantageous to a plant growing in an environment to which it is well adapted. 
B)  may be advantageous to plants exposed to new environmental challenges. 
C)  discourages the rapid spread of plants such as bamboo. 
D)  promotes genetic diversity plants in the culture of some agriculturally important plants. 
E)  is not used in agriculture.

Question 17

The induction of flowering by means of exposure to low temperature is called

Accepted Answer

A)  vernalization. 
B)  frigidation. 
C)  apomixis. 
D)  viviparity. 
E)  None of the above 
A)  vernalization. 
B)  frigidation. 
C)  apomixis. 
D)  viviparity. 
E)  None of the above

Question 18

Use the following to answer questions :
Refer to the diagram below.  
-Name the two nuclei of the megagametophyte that will help form the endosperm and identify their label.

Accepted Answer

The answer of Use the following to answer questions :
Refer...

Question 19

The megasporocyte divides

Accepted Answer

A)  mitotically to produce four diploid cells, one of which becomes the diploid megagametophyte. 
B)  meiotically to produce four diploid cells, one of which becomes the diploid megagametophyte. 
C)  meiotically to produce four diploid cells, one of which becomes the haploid megagametophyte. 
D)  meiotically to produce four haploid cells, one of which becomes the haploid megagametophyte. 
E)  meiotically to produce the male gametophyte. 
A)  mitotically to produce four diploid cells, one of which becomes the diploid megagametophyte. 
B)  meiotically to produce four diploid cells, one of which becomes the diploid megagametophyte. 
C)  meiotically to produce four diploid cells, one of which becomes the haploid megagametophyte. 
D)  meiotically to produce four haploid cells, one of which becomes the haploid megagametophyte. 
E)  meiotically to produce the male gametophyte.

Question 20

Which of the following is not part of a megagametophyte?

Accepted Answer

A)  Pollen grain 
B)  Synergids 
C)  Antipodal cells 
D)  Polar nuclei 
E)  All of the above are not part of the megagametophyte. 
A)  Pollen grain 
B)  Synergids 
C)  Antipodal cells 
D)  Polar nuclei 
E)  All of the above are not part of the megagametophyte.

Exam 38: Reproduction in Flowering Plants

Double fertilization results in the formation of

Which of the following conditions is necessary for successful grafting?

A benefit of sexual reproduction in plants is

The transition a plant makes from the vegetative state to the flowering state

Asexual reproduction is the best strategy for plants

Quaking aspen trees usually reproduce asexually in Colorado but sexually in New England. From this information, what can one hypothesize about the stability of the two environments in which the aspens grow?

Bamboo reproduces by means of

Compare and contrast asexual and sexual reproduction in plants. In which category does self-fertilization belong?

Florigen is

Describe double fertilization. What is the ploidy level of the products of double fertilization?

Which of the following is not a part of an angiosperm seed?

The male gametophyte in seed plants is the _______; the mature female gametophyte is an embryo sac with _______ haploid nuclei.

Describe egg formation in angiosperms, beginning with the sporophyte.

An apomictic seed contains an embryo that is

After setting the correct photoperiod, the managers of a greenhouse still do not have blooming roses. Which of the following possibilities would most likely have contributed to the problem?

Vegetative reproduction

The induction of flowering by means of exposure to low temperature is called

Use the following to answer questions : Refer to the diagram below. -Name the two nuclei of the megagametophyte that will help form the endosperm and identify their label.

The megasporocyte divides

Which of the following is not part of a megagametophyte?

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The male gametophyte in seed plants is the _; the mature female gametophyte is an embryo sac with _ haploid nuclei.