Question 1

The pollen-producing body of a flower is the

Accepted Answer

A)   stigma.
B)   ovary.
C)   anther.
D)   style.
E)   sepal.F) B) and E)
G) C) and D)

Question 2

A region of separation that forms near the base of the leaf's petiole when the leaf is shed is the

Accepted Answer

A)   Casparian strip.
B)   endosperm.
C)   statolith.
D)   abscission zone.
E)   pericycle.F) A) and C)
G) B) and D)

Question 3

Jasmonic acid is a plant hormone that activates a plant's defenses against predators.

Accepted Answer

A) True 
 B)False

Question 4

Where are floral megaspores located?

Accepted Answer

A)   anther
B)   ovule
C)   sepal
D)   stigma
E)   corollaF) D) and E)
G) A) and E)

Question 5

The plant hormone that triggers the withering of petals and stamens and promotes fruit ripening is

Accepted Answer

A)   abscisic acid.
B)   gibberellins.
C)   jasmonic acid.
D)   cytokinins.
E)   ethylene.F) None of the above
G) B) and D)

Question 6

The sporophyte generation of a plant is _________________ and produces ___________________ spores.

Accepted Answer

A)   haploid; diploid
B)   triploid; haploid
C)   diploid; haploid
D)   multicellular; diploid
E)   triploid; diploidF) B) and D)
G) A) and D)

Question 7

The portion of a flower that receives the pollen is the

Accepted Answer

A)   anther.
B)   ovary.
C)   sepal.
D)   style.
E)   stigma.F) All of the above
G) B) and D)

Question 8

Abscisic acid is a plant hormone that activates a plant's defenses against predators.

Accepted Answer

A) True 
 B)False

Question 9

What is a seed?

Accepted Answer

A)   a diploid embryo
B)   a haploid gametophyte
C)   a mature pollen
D)   a diploid spore
E)   a mature sporophyteF) C) and E)
G) A) and B)

Question 10

Cytokinins are plant hormones that stimulate the ripening of fruit.

Accepted Answer

A) True 
 B)False

Question 11

Double fertilization reduces the energetic cost of reproduction.In gymnosperms,the female gametophyte stockpiles food for the embryo in advance of fertilization.The investment is wasted if no zygote ever forms.In contrast,double fertilization ensures that an angiosperm devotes energy to the zygote only if sperm fertilizes the egg.Where is this energy stored in a fertilized angiosperm?

Accepted Answer

A)   zygote
B)   endosperm
C)   stigma
D)   egg
E)   pollenF) A) and B)
G) C) and E)

Question 12

Gymnosperms are the flowering plants.

Accepted Answer

A) True 
 B)False

Question 13

A directional response to touch exhibited by plants is called

Accepted Answer

A)   phototropism.
B)   gravitropism.
C)   chemotropism.
D)   organotropism.
E)   thigmotropism.F) A) and B)
G) A) and C)

Question 14

A seed's response to gravity is called

Accepted Answer

A)   phototropism.
B)   chemotropism.
C)   gravitropism.
D)   thigmotropism.
E)   organotropism.F) C) and D)
G) A) and C)

Question 15

Whorl two of a flower is made up of the

Accepted Answer

A)   male parts of a flower.
B)   female parts of a flower.
C)   petals.
D)   sepals.
E)   stem region.F) A) and C)
G) A) and B)

Question 16

In the late 1870s,Charles Darwin and his son Francis discovered that if the tip of the grass was covered,phototropism did not occur,even though the rest of the grass was exposed to light.However,if the rest of the plant was covered and only the tip exposed to light,the grass bent a few centimeters below the tip.Which of the following was sensing the light?

Accepted Answer

A)   auxin-detecting cells in the tip of the grass
B)   auxin-detecting cells a few centimeters below the tip of the grass
C)   auxin-producing cells a few centimeters below the tip of the grass
D)   auxin-producing cells in the tip of the grassE) A) and C)
F) B) and C)

Question 17

The main pollinators of flowers that have markings visible only under ultraviolet light are

Accepted Answer

A)   flies.
B)   bats and moths.
C)   bees.
D)   beetles.
E)   birds.F) A) and B)
G) A) and C)

Question 18

How are animals involved in the life cycle of plants?

Accepted Answer

A)   pollinators and seed dispersers
B)   seed germinators
C)   pollinators
D)   seed dispersers
E)   seed dispersers and germinatorsF) B) and E)
G) B) and D)

Question 19

The first step in the germination of a plant seed is the absorption of water.

Accepted Answer

A) True 
 B)False

Question 20

Whorl one,the outermost whorl of a flower,is made up of the

Accepted Answer

A)   female parts of a flower.
B)   petals.
C)   stem region.
D)   male parts of a flower.
E)   sepals.F) B) and D)
G) B) and C)

Exam 24: Reproduction and Development of Flowering Plants

The pollen-producing body of a flower is the

Correct Answer
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The plant hormone that triggers the withering of petals and stamens and promotes fruit ripening is

Correct Answer
verified

The main pollinators of flowers that have markings visible only under ultraviolet light are

Correct Answer
verified

A region of separation that forms near the base of the leaf's petiole when the leaf is shed is the

Correct Answer
verified

The first step in the germination of a plant seed is the absorption of water.

Correct Answer
verified

A seed's response to gravity is called

Correct Answer
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Where are floral megaspores located?

Correct Answer
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A directional response to touch exhibited by plants is called

Correct Answer
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Jasmonic acid is a plant hormone that activates a plant's defenses against predators.

Correct Answer
verified

What is a seed?

Correct Answer
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How are animals involved in the life cycle of plants?

Correct Answer
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Correct Answer
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The portion of a flower that receives the pollen is the

Correct Answer
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The sporophyte generation of a plant is _ and produces ___ spores.

Correct Answer
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Correct Answer
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Cytokinins are plant hormones that stimulate the ripening of fruit.

Correct Answer
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Whorl two of a flower is made up of the

Correct Answer
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Gymnosperms are the flowering plants.

Correct Answer
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Whorl one,the outermost whorl of a flower,is made up of the

Correct Answer
verified

Abscisic acid is a plant hormone that activates a plant's defenses against predators.

Correct Answer
verified

Exam 24: Reproduction and Development of Flowering Plants

The pollen-producing body of a flower is the

Correct AnswerverifiedShow Answer

The plant hormone that triggers the withering of petals and stamens and promotes fruit ripening is

Correct AnswerverifiedShow Answer

The main pollinators of flowers that have markings visible only under ultraviolet light are

Correct AnswerverifiedShow Answer

A region of separation that forms near the base of the leaf's petiole when the leaf is shed is the

Correct AnswerverifiedShow Answer

The first step in the germination of a plant seed is the absorption of water.

Correct AnswerverifiedShow Answer

A seed's response to gravity is called

Correct AnswerverifiedShow Answer

Where are floral megaspores located?

Correct AnswerverifiedShow Answer

A directional response to touch exhibited by plants is called

Correct AnswerverifiedShow Answer

Jasmonic acid is a plant hormone that activates a plant's defenses against predators.

Correct AnswerverifiedShow Answer

What is a seed?

Correct AnswerverifiedShow Answer

How are animals involved in the life cycle of plants?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The portion of a flower that receives the pollen is the

Correct AnswerverifiedShow Answer

The sporophyte generation of a plant is _________________ and produces ___________________ spores.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Cytokinins are plant hormones that stimulate the ripening of fruit.

Correct AnswerverifiedShow Answer

Whorl two of a flower is made up of the

Correct AnswerverifiedShow Answer

Gymnosperms are the flowering plants.

Correct AnswerverifiedShow Answer

Whorl one,the outermost whorl of a flower,is made up of the

Correct AnswerverifiedShow Answer

Abscisic acid is a plant hormone that activates a plant's defenses against predators.

Correct AnswerverifiedShow Answer

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The sporophyte generation of a plant is _ and produces ___ spores.

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