Question 1

Compared with other plant taxa such as ferns, the gametophyte generation of angiosperms is _______.

Accepted Answer

The answer of Compared with other plant taxa such as...

Question 2

Suppose you are stranded on a desert island that is devoid of vegetation.One day at low tide, you notice a coconut that was not present the day before.It was most likely dispersed from its parent plant by

Accepted Answer

A)  monkeys. 
B)  the wind. 
C)  fruit bats. 
D)  water. 
E)  birds. 
A)  monkeys. 
B)  the wind. 
C)  fruit bats. 
D)  water. 
E)  birds.

Question 3

To produce virus-free plants via tissue culture, it is important to use _______ cultures.

Accepted Answer

A)  seed 
B)  callus 
C)  meristem 
D)  ovary 
E)  style 
A)  seed 
B)  callus 
C)  meristem 
D)  ovary 
E)  style

Question 4

Bulbs are vegetative structures made up of stems and

Accepted Answer

A)  roots. 
B)  petals. 
C)  leaves. 
D)  trichomes. 
E)  glandular hairs. 
A)  roots. 
B)  petals. 
C)  leaves. 
D)  trichomes. 
E)  glandular hairs.

Question 5

Recall what you have read about the genes involved in flowering in angiosperms: AP1, CO, FD, FLC, and FT.Which of the genes in this pathway is affected by temperature? Briefly explain the effect of temperature on this gene.

Accepted Answer

Cold tempe

Question 6

The ability of plants to measure night length was determined by experiments in which

Accepted Answer

A)  plants were grown in 12 hours of darkness alternating with 12 hours of light. 
B)  plants were grown in continuous light. 
C)  plants were grown in dark periods that were interrupted with brief pulses of light. 
D)  flowering was measured in plants of different ages that had been placed on the same light-dark schedule. 
E)  plants were grown in a 24-hour cycle in which the length of the light period was increased gradually. 
A)  plants were grown in 12 hours of darkness alternating with 12 hours of light. 
B)  plants were grown in continuous light. 
C)  plants were grown in dark periods that were interrupted with brief pulses of light. 
D)  flowering was measured in plants of different ages that had been placed on the same light-dark schedule. 
E)  plants were grown in a 24-hour cycle in which the length of the light period was increased gradually.

Question 7

Which genes control formation of floral meristems rather than floral organs?

Accepted Answer

A)  Cell cycle genes 
B)  Organ identity genes 
C)  Flowering time genes 
D)  Circadian genes 
E)  Meristem identity genes 
A)  Cell cycle genes 
B)  Organ identity genes 
C)  Flowering time genes 
D)  Circadian genes 
E)  Meristem identity genes

Question 8

A flower that is wind-pollinated would be least likely to

Accepted Answer

A)  have numerous anthers. 
B)  have sticky or feathery stigmas. 
C)  produce large numbers of pollen grains. 
D)  have a colorful corolla. 
E)  have unscented flowers. 
A)  have numerous anthers. 
B)  have sticky or feathery stigmas. 
C)  produce large numbers of pollen grains. 
D)  have a colorful corolla. 
E)  have unscented flowers.

Question 9

Suppose you are studying fertilization in petunias.From what part of the flower would 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 10

Which type of cell division is critical to and unique in sexual reproduction?

Accepted Answer

A)  Mitosis 
B)  Apomixis 
C)  Meiosis 
D)  Fission 
E)  Stasis 
A)  Mitosis 
B)  Apomixis 
C)  Meiosis 
D)  Fission 
E)  Stasis

Question 11

You manage a greenhouse that produces roses for Valentine's Day.Roses normally bloom in June.You need to produce roses that bloom in February.Which lighting schedule will most likely be best for your roses?

Accepted Answer

A)  16 hours of light, followed by 8 hours of interrupted dark 
B)  16 hours of light, followed by 8 hours of uninterrupted dark 
C)  10 hours of light, followed by 14 hours of uninterrupted dark 
D)  10 hours of light, followed by 14 hours of interrupted dark 
E)  8 hours of light, followed by 16 hours of uninterrupted dark 
A)  16 hours of light, followed by 8 hours of interrupted dark 
B)  16 hours of light, followed by 8 hours of uninterrupted dark 
C)  10 hours of light, followed by 14 hours of uninterrupted dark 
D)  10 hours of light, followed by 14 hours of interrupted dark 
E)  8 hours of light, followed by 16 hours of uninterrupted dark

Question 12

A new variety of oats that requires vernalization must _______ before it will produce seeds.

Accepted Answer

A)  be exposed to cold 
B)  have a source of soil calcium 
C)  experience a minimal day length 
D)  have sufficient moisture for a minimum period 
E)  experience a full year of growth 
A)  be exposed to cold 
B)  have a source of soil calcium 
C)  experience a minimal day length 
D)  have sufficient moisture for a minimum period 
E)  experience a full year of growth

Question 13

Experiments have shown that when a short-day plant (SDP) and a long-day plant (LDP) are grafted together and the SDP is exposed to a photoperiod that causes it to flower, the LDP flowers as well.This observation supports the theory that a specific flower-initiating hormone is produced in plants.A properly controlled experiment would repeat the grafting procedure but

Accepted Answer

A)  graft together the two plants and not induce the SDP. 
B)  omit the LDP. 
C)  omit the SDP. 
D)  shorten the SDP photoperiod. 
E)  include an LDP photoperiod. 
A)  graft together the two plants and not induce the SDP. 
B)  omit the LDP. 
C)  omit the SDP. 
D)  shorten the SDP photoperiod. 
E)  include an LDP photoperiod.

Question 14

You have found a new angiosperm species.Its flowers have four whorls, including carpels and stamens.Therefore, the flowers on this plant are considered _______.

Accepted Answer

The answer of You have found a new angiosperm species.Its...

Question 15

Pollination

Accepted Answer

A)  is the transfer of pollen from the anther to the stigma. 
B)  always results in seed formation. 
C)  is the transfer of pollen from the stigma to the anther. 
D)  occurs immediately after seed formation. 
E)  is the production of pollen by a flower. 
A)  is the transfer of pollen from the anther to the stigma. 
B)  always results in seed formation. 
C)  is the transfer of pollen from the stigma to the anther. 
D)  occurs immediately after seed formation. 
E)  is the production of pollen by a flower.

Question 16

Poinsettias are "Christmas plants" in North America.An analogous "Christmas plant" in South America would need to be a _______ plant.

Accepted Answer

The answer of Poinsettias are "Christmas plants" in North America.An...

Question 17

Technically, short-day plants flower when the _______ period _______ a critical period.

Accepted Answer

A)  light; exceeds 
B)  light; is less than 
C)  light; equals 
D)  dark; exceeds 
E)  dark; is less than 
A)  light; exceeds 
B)  light; is less than 
C)  light; equals 
D)  dark; exceeds 
E)  dark; is less than

Question 18

A mutant plant that does not produce abscisic acid during the seed-forming part of its life cycle is likely to produce seeds that are

Accepted Answer

A)  excessively dehydrated. 
B)  dormant. 
C)  exceptionally large. 
D)  exceptionally small. 
E)  viviparous. 
A)  excessively dehydrated. 
B)  dormant. 
C)  exceptionally large. 
D)  exceptionally small. 
E)  viviparous.

Question 19

Self-pollination results in progeny that

Accepted Answer

A)  are identical to the parent. 
B)  are somewhat different from the parent because mutations are common. 
C)  can express only alleles that were present in the parent. 
D)  may be heterozygous in a locus where the parent is homozygous. 
E)  may be as varied as progeny resulting from cross-pollination. 
A)  are identical to the parent. 
B)  are somewhat different from the parent because mutations are common. 
C)  can express only alleles that were present in the parent. 
D)  may be heterozygous in a locus where the parent is homozygous. 
E)  may be as varied as progeny resulting from cross-pollination.

Question 20

If a seed is dormant, it likely contains high concentrations of

Accepted Answer

A)  abscisic acid. 
B)  auxin. 
C)  cytokinin. 
D)  ethylene. 
E)  gibberellin. 
A)  abscisic acid. 
B)  auxin. 
C)  cytokinin. 
D)  ethylene. 
E)  gibberellin.

Exam 37: Reproduction in Flowering Plants

Compared with other plant taxa such as ferns, the gametophyte generation of angiosperms is _______.

Suppose you are stranded on a desert island that is devoid of vegetation.One day at low tide, you notice a coconut that was not present the day before.It was most likely dispersed from its parent plant by

To produce virus-free plants via tissue culture, it is important to use _______ cultures.

Bulbs are vegetative structures made up of stems and

Recall what you have read about the genes involved in flowering in angiosperms: AP1, CO, FD, FLC, and FT.Which of the genes in this pathway is affected by temperature? Briefly explain the effect of temperature on this gene.

The ability of plants to measure night length was determined by experiments in which

Which genes control formation of floral meristems rather than floral organs?

A flower that is wind-pollinated would be least likely to

Suppose you are studying fertilization in petunias.From what part of the flower would you extract material to study?

Which type of cell division is critical to and unique in sexual reproduction?

You manage a greenhouse that produces roses for Valentine's Day.Roses normally bloom in June.You need to produce roses that bloom in February.Which lighting schedule will most likely be best for your roses?

A new variety of oats that requires vernalization must _______ before it will produce seeds.

You have found a new angiosperm species.Its flowers have four whorls, including carpels and stamens.Therefore, the flowers on this plant are considered _______.

Pollination

Poinsettias are "Christmas plants" in North America.An analogous "Christmas plant" in South America would need to be a _______ plant.

Technically, short-day plants flower when the _______ period _______ a critical period.

A mutant plant that does not produce abscisic acid during the seed-forming part of its life cycle is likely to produce seeds that are

Self-pollination results in progeny that

If a seed is dormant, it likely contains high concentrations of

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Technically, short-day plants flower when the _ period _ a critical period.