Question 1

All of the following are modes of vegetative reproduction except

Accepted Answer

A)  runners.
B)  rhizoids.
C)  apomixis.
D)  suckers.
E)  rhizomes.F) B) and E)
G) B) and D)

Question 2

Plants that produce only ovules or only pollen are called

Accepted Answer

A)  monoecious plants.
B)  dioecious plants.
C)  hermaphroditic plants.
D)  incomplete plants.
E)  determinant plants.F) A) and B)
G) B) and E)

Question 3

Plants such as oaks,birches,and corn produce both staminate and pistillate flowers on the same plant.These types of plants are known as

Accepted Answer

A)  monoecious.
B)  dioecious.
C)  hermaphroditiC.
D)  complete.
E)  determinant.F) C) and D)
G) All of the above

Question 4

Which of the following statements about flowering plants is true?

Accepted Answer

A)  A short-day plant requires nights longer than a certain critical period to trigger flowering.
B)  A long-day plant requires nights shorter than a certain critical period to inhibit flowering.
C)  A short-day plant requires daylight of short wavelengths.
D)  A long-day plant requires long wavelengths during the night.
E)  A long-day plant requires long days alternating with short days.F) A) and E)
G) A) and C)

Question 5

Angiosperms use which temporary reproductive structures that are not present in any other group of plants?

Accepted Answer

A)  cones
B)  carpels
C)  receptacles
D)  flowers
E)  seedsF) A) and B)
G) A) and D)

Question 6

In the ABC model of floral organ identity genes,different combinations of the three genes specify the following different floral organs.Which of the genes influences the other two?

Accepted Answer

A)  A
B)  B
C)  C
D)  florigen
E)  ethyleneF) B) and E)
G) D) and E)

Question 7

The fused carpels of a gynoecium are referred to as

Accepted Answer

A)  simple flowers.
B)  corollas.
C)  complete flowers.
D)  compound pistils.
E)  compound stamens.F) None of the above
G) B) and D)

Question 8

Among insect-pollinated angiosperms,which of these are the most common pollinators?

Accepted Answer

A)  bees
B)  butterflies
C)  fruit flies
D)  moths
E)  antsF) B) and D)
G) B) and E)

Question 9

If a plant self-pollinates and has complete flowers,then it must be

Accepted Answer

A)  dichogamous.
B)  monoecious.
C)  dioecious.
D)  staminate.
E)  pistillatE.F) C) and E)
G) A) and B)

Question 10

In the ABC model of floral organ identity genes,different combinations of the three genes specify the following different floral organs.Mutants missing the C gene have flowers with only

Accepted Answer

A)  petals and sepals.
B)  stamens and carpels.
C)  petals.
D)  sepals.
E)  stamens,carpels,and petals.F) A) and C)
G) A) and E)

Question 11

A researcher is investigating the morphology of complete flowers.This means that the flowers contain

Accepted Answer

A)  calyx,corolla,receptacle,and carpels.
B)  calyx,corolla,carpels,and ovules.
C)  calyx,corolla,stamens,and anthers.
D)  calyx,corolla,carpels,and pistils.
E)  calyx,corolla,androecium,and gynoecium.F) None of the above
G) C) and D)

Question 12

In a wind-pollinated flower,which of these flower parts would probably be inconspicuous or missing?

Accepted Answer

A)  receptacle
B)  stamens
C)  pistils
D)  petals
E)  stigmasF) A) and D)
G) A) and C)

Question 13

Flowering plants use animals or wind to transfer ________ between flowers.

Accepted Answer

A)  spores
B)  CO2
C)  ovules
D)  seeds
E)  pollenF) B) and C)
G) A) and D)

Question 14

When functional stamens and carpels are both present,but reach maturity at different times,the flowers are said to be

Accepted Answer

A)  androecious.
B)  dioecious.
C)  dichogamous.
D)  monoecious.
E)  gynoecious.F) A) and C)
G) None of the above

Question 15

The steps involved in the fertilization of angiosperm flowers include all of the following except

Accepted Answer

A)  pollen is transported to a stigma of a flower.
B)  when pollen reaches the stigma of a flower,it begins to grow a pollen tube that pierces the style.
C)  the style of the pistil contracts to bring the sperm closer to the embryo saC.
D)  the pollen tube grows until it reaches the ovule in the ovary.
E)  double fertilization produces an embryo and the endosperm.F) B) and E)
G) A) and E)

Question 16

Which of these statements about florigen is not true?

Accepted Answer

A)  Florigen is triggered by the ratio of auxin to phytochrome.
B)  The structure of florigen is unknown.
C)  Florigen transferred from a flowering plant to a nonflowering one can trigger flowering.
D)  Florigen is produced in leaves,not flowers.
E)  The florigen response may involve several chemical messengers.F) All of the above
G) A) and B)

Question 17

Which of the following statements about the angiosperm embryo sac is false?

Accepted Answer

A)  It contains eight nuclei.
B)  It is the gametophyte generation of the plant.
C)  The nuclei within the embryo sac are diploid.
D)  The synergids flank the egg cell.
E)  The embryo sac nuclei are produced by mitosis of a megasporE.F) B) and C)
G) A) and E)

Question 18

Which of these is not an example of coevolution between flowers and pollinating bees?

Accepted Answer

A)  Bees have tongues to lap up nectar.
B)  Some bees are hairy to collect and carry pollen.
C)  Flowers have ultraviolet markings visible to bees but invisible to most other insects.
D)  Some flowers are bright red with long tubes to hold nectar.
E)  Bees have strong preferences for particular types of flowers and remember where the plants are located.F) C) and E)
G) A) and B)

Question 19

The androecium is a collective term for the

Accepted Answer

A)  carpels.
B)  stamens.
C)  petals.
D)  sepals.
E)  ovules.F) C) and E)
G) A) and D)

Question 20

What is the best description of double fertilization in angiosperms?

Accepted Answer

A)  One sperm fertilizes the egg,which develops into the embryo;the other sperm fertilizes the ovary,which becomes the fruit.
B)  One sperm fertilizes the egg,which develops into the embryo;the other sperm fertilizes the polar nuclei,which forms the endosperm.
C)  One sperm fertilizes the egg,which develops into the embryo;the other sperm fertilizes the polar nuclei,which forms the seed coat.
D)  One sperm fertilizes the egg,which develops into the embryo;the other sperm produces the pollen tube.
E)  One pollen grain fertilizes the embryo sac;the other sperm fertilizes the pollen grain.F) D) and E)
G) C) and D)

Exam 42: Plant Reproduction

If a plant self-pollinates and has complete flowers,then it must be

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The androecium is a collective term for the

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Which of these is not an example of coevolution between flowers and pollinating bees?

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The steps involved in the fertilization of angiosperm flowers include all of the following except

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All of the following are modes of vegetative reproduction except

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Which of the following statements about flowering plants is true?

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In a wind-pollinated flower,which of these flower parts would probably be inconspicuous or missing?

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A researcher is investigating the morphology of complete flowers.This means that the flowers contain

Correct AnswerverifiedShow Answer

What is the best description of double fertilization in angiosperms?

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Plants such as oaks,birches,and corn produce both staminate and pistillate flowers on the same plant.These types of plants are known as

Correct AnswerverifiedShow Answer

Plants that produce only ovules or only pollen are called

Correct AnswerverifiedShow Answer

Among insect-pollinated angiosperms,which of these are the most common pollinators?

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Which of the following statements about the angiosperm embryo sac is false?

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Flowering plants use animals or wind to transfer ________ between flowers.

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In the ABC model of floral organ identity genes,different combinations of the three genes specify the following different floral organs.Mutants missing the C gene have flowers with only

Correct AnswerverifiedShow Answer

In the ABC model of floral organ identity genes,different combinations of the three genes specify the following different floral organs.Which of the genes influences the other two?

Correct AnswerverifiedShow Answer

Which of these statements about florigen is not true?

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Angiosperms use which temporary reproductive structures that are not present in any other group of plants?

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When functional stamens and carpels are both present,but reach maturity at different times,the flowers are said to be

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The fused carpels of a gynoecium are referred to as

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