Question 1

_________________ is a plant hormone that controls stomatal closure and has some effect on the dormancy of many seeds.

Accepted Answer

A)   Abscisic acid
B)   Cytokinin
C)   Auxin
D)   GibberellinE) A) and D)
F) B) and C)

Question 2

All plants have both male and female reproductive structures together in the same individual flower.

Accepted Answer

A) True 
 B)False

Question 3

The response of plants to touch is known as

Accepted Answer

A)   phototropism.
B)   gravitropism.
C)   thigmotropism.
D)   photoperiodism.E) A) and C)
F) B) and D)

Question 4

This hormone in combination with auxin stimulates cell division in plants.

Accepted Answer

A)   Abscisic acid
B)   Cytokinin
C)   Auxin
D)   Gibberellin
E)   EthyleneF) None of the above
G) A) and B)

Question 5

The phenomenon known as phototropism is due to the plant hormone _____________,which regulates cell growth.

Accepted Answer

A)   abscisic acid
B)   cytokinin
C)   auxin
D)   gibberellinE) All of the above
F) A) and B)

Question 6

All of the following fruits are classified as drupes except

Accepted Answer

A)   olives.
B)   pears.
C)   plums.
D)   cherries.E) None of the above
F) A) and B)

Question 7

Give an example of a wind-pollinated plant._____________________

Accepted Answer

Gymnosperm...

Question 8

The plant response in which stems grow upward and roots grow downward is called

Accepted Answer

A)   phototropism.
B)   gravitropism.
C)   thigmotropism.
D)   photoperiodism.E) B) and C)
F) B) and D)

Question 9

Describe double fertilization.

Accepted Answer

The answer of Describe double fertilization....

Question 10

What characteristic describes wind-pollinated angiosperms?

Accepted Answer

A)   Small,yellow flowers
B)   Plants grow in close proximity to each other
C)   Red flowers to attract birds
D)   All of these are correct.E) B) and C)
F) None of the above

Question 11

Describe the mechanism whereby the length of a long night allows for flowering in short day plants.

Accepted Answer

Short day plants require a long period o...

Question 12

Germination of the embryo within the seed does not take place until

Accepted Answer

A)   any amount of sunlight strikes the seed.
B)   daylength is appropriate for the plant.
C)   water and oxygen reach the embryo.
D)   the seed has passed through the gut of an animal.E) B) and C)
F) B) and D)

Question 13

What is the primary purpose of a fruit?

Accepted Answer

A)   To aid in seed dispersal
B)   To reward animals for pollination
C)   To feed the growing embryo of the plant
D)   To deter predatorsE) B) and D)
F) B) and C)

Question 14

When applied to underripe fruit,the hormone _____________ hastens ripening.

Accepted Answer

A)   auxin
B)   gibberellin
C)   ethylene
D)   abscisic acidE) A) and B)
F) A) and C)

Question 15

In order to delay the ripening of tomatoes,the gene for this hormone has been disrupted in genetically engineered tomatoes.

Accepted Answer

A)   Gibberellin
B)   Auxin
C)   Cytokinin
D)   Abscisic acid
E)   EthyleneF) C) and D)
G) None of the above

Question 16

In plants,hormones are produced in endocrine glands.

Accepted Answer

A) True 
 B)False

Question 17

____________ is the mechanism by which organisms measure seasonal changes in relative day and night length.

Accepted Answer

The answer of ____________ is the mechanism by which organisms...

Question 18

Flowering plants respond to day and night length in part through the pigment ________________,which exist in two interconvertible forms.

Accepted Answer

The answer of Flowering plants respond to day and night...

Question 19

Early in the development of an angiosperm embryo,the embryo becomes dormant.This dormancy occurs

Accepted Answer

A)   after fertilization.
B)   once the root and shoot have penetrated the seed coat.
C)   after the apical meristems and the cotyledons are differentiated.
D)   All of these are correct.E) A) and C)
F) A) and D)

Question 20

In some plants,flowering is controlled by seasonal changes in relative day and night length,also called

Accepted Answer

A)   phototropism.
B)   gravitropism.
C)   thigmotropism.
D)   photoperiodism.E) B) and C)
F) B) and D)

Exam 33: Plant Reproduction and Growth

What is the primary purpose of a fruit?

Correct AnswerverifiedShow Answer

Flowering plants respond to day and night length in part through the pigment ________________,which exist in two interconvertible forms.

Correct AnswerverifiedShow Answer

In order to delay the ripening of tomatoes,the gene for this hormone has been disrupted in genetically engineered tomatoes.

Correct AnswerverifiedShow Answer

The phenomenon known as phototropism is due to the plant hormone _____________,which regulates cell growth.

Correct AnswerverifiedShow Answer

Germination of the embryo within the seed does not take place until

Correct AnswerverifiedShow Answer

The plant response in which stems grow upward and roots grow downward is called

Correct AnswerverifiedShow Answer

Early in the development of an angiosperm embryo,the embryo becomes dormant.This dormancy occurs

Correct AnswerverifiedShow Answer

_________________ is a plant hormone that controls stomatal closure and has some effect on the dormancy of many seeds.

Correct AnswerverifiedShow Answer

____________ is the mechanism by which organisms measure seasonal changes in relative day and night length.

Correct AnswerverifiedShow Answer

Describe double fertilization.

Correct AnswerverifiedShow Answer

The response of plants to touch is known as

Correct AnswerverifiedShow Answer

This hormone in combination with auxin stimulates cell division in plants.

Correct AnswerverifiedShow Answer

All of the following fruits are classified as drupes except

Correct AnswerverifiedShow Answer

All plants have both male and female reproductive structures together in the same individual flower.

Correct AnswerverifiedShow Answer

When applied to underripe fruit,the hormone _____________ hastens ripening.

Correct AnswerverifiedShow Answer

In some plants,flowering is controlled by seasonal changes in relative day and night length,also called

Correct AnswerverifiedShow Answer

Give an example of a wind-pollinated plant._____________________

Correct AnswerverifiedGymnosperm...View AnswerShow Answer

In plants,hormones are produced in endocrine glands.

Correct AnswerverifiedShow Answer

Describe the mechanism whereby the length of a long night allows for flowering in short day plants.

Correct AnswerAnswered by ExamLex AIShort day plants require a long period o...View AnswerShow Answer

What characteristic describes wind-pollinated angiosperms?

Correct AnswerverifiedShow Answer

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Gymnosperm...
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Short day plants require a long period o...
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