Question 1

If a pollen grain lands on the stigma of a plant that is not related to that plant then the following would happen:

Accepted Answer

A)   The pollen grain would be too large or too small to enter the stigma.
B)   The pollen would likely not attach to the stigma.
C)   The pollen grain would be unable to grow through the stigma.
D)   The pollen grain would be unable to form sperm nuclei.
E)   The pollen grain would be ejected from the stigma.F) C) and D)
G) A) and B)

Question 2

Perhaps the most important single environmental factor responsible for flower formation is:

Accepted Answer

A)   appropriate weather
B)   appropriate temperature
C)   adequate water
D)   soil type
E)   day lengthF) B) and D)
G) C) and E)

Question 3

Seedless fruits may be produced by use of certain plant hormones.

Accepted Answer

A) True 
 B)False

Question 4

An understanding of the role of abscisic acid (ABA) could help better understand why some seeds need light in order to germinate.

Accepted Answer

A) True 
 B)False

Question 5

The primary role of the two sperm produced in the germ tube of the pollen is to

Accepted Answer

A)   release proteins for germination
B)   aid the plant's seed production
C)   ensure that there will be fertilization of the egg and the two central cells
D)   ensure production of an embryo
E)   allow the endosperm to become a seedF) None of the above
G) A) and E)

Question 6

A fruit could best be described as:

Accepted Answer

A)   developing from a flower
B)   development from the ovule
C)   an endosperm extension
D)   part of the gametophyte generation
E)   None of these is trueF) D) and E)
G) All of the above

Question 7

The seed coat often restrains embryos from growing and prevents the entry of water and oxygen to the seed.

Accepted Answer

A) True 
 B)False  True

Question 8

Which of the following is NOT a characteristic of seeds?

Accepted Answer

A)   They contain endosperm.
B)   They have an embryo.
C)   They may differ in amount of water content.
D)   They usually vary in size.
E)   They usually have about the same amount of water.F) All of the above
G) A) and C)

Question 9

Basically a flower is composed of four concentric rings or parts known as:

Accepted Answer

A)   calyxes
B)   spales
C)   whorls
D)   androeciums
E)   gynoeciumsF) A) and B)
G) D) and E)

Question 10

One advantage of cross-pollination in plants would be to provide:

Accepted Answer

A)   different forms of double fertilization
B)   more healthy seeds
C)   better embryos for the seed to grow
D)   a better chance for germination on the stigma
E)   more exchange of genetic informationF) A) and B)
G) A) and C)

Question 11

Plants that are dioecious are best described as having:

Accepted Answer

A)   staminate and carpellate flowers on separate plants
B)   all flower parts in pairs
C)   flower parts that may be absent at certain seasons
D)   flower arrangements unique to eudicots
E)   flower arrangements unique to monocotsF) A) and B)
G) B) and D)

Question 12

The term monoecious is best described as referring to the flower in what way?

Accepted Answer

A)   It refers to the number of flower parts.
B)   It describes where the parts are located.
C)   It has nothing to do with flower parts.
D)   It refers to the carpellate and staminate parts.
E)   It means there are missing parts on the flower.F) A) and D)
G) A) and C)

Question 13

It has been estimated that 70% of human and animal food ________ comes from seed endosperm of grain crops.

Accepted Answer

A)   carbohydrate
B)   fat
C)   vitamins
D)   protein
E)   mineralsF) All of the above
G) A) and E)

Question 14

Fluorescence microscopy has been helpful in observing:

Accepted Answer

A)   attachment of pollen grains to the anther
B)   pollen tube development in the style
C)   time involved in pollen release from anthers
D)   location of pollen within the anther
E)   The size of pollen grainsF) A) and B)
G) None of the above

Question 15

The reason legumes are valued as food plants is because of their high content of:

Accepted Answer

A)   carbohydrates
B)   fats
C)   vitamins
D)   minerals
E)   proteinsF) B) and E)
G) D) and E)

Question 16

A plant that is dioecious could also have perfect flowers.

Accepted Answer

A) True 
 B)False

Question 17

Callose has what effect on pollen?

Accepted Answer

A)   aids differentiation and attachment of pollen to the carpel
B)   aids pollen development and helps pollen tubes to grow
C)   aids pollen coat development
D)   aids pollen coloration
E)   aids the separation of pollen grains from the antherF) B) and E)
G) B) and C)

Question 18

The only triploid stage in the life cycle of a flowering plant is the:

Accepted Answer

A)   zygote
B)   embryo
C)   endosperm
D)   egg
E)   stigma tissueF) None of the above
G) D) and E) C

Question 19

One application of knowledge of when flowering occurs is related to:

Accepted Answer

A)   pollen allergy reactions
B)   how much water the plant is receiving
C)   how often to expect plants to flower
D)   temperature relationships
E)   when to expect insects to be more abundantF) A) and C)
G) C) and D) A

Question 20

One reason plant growers might use vegetative reproduction rather than conventional breeding of plants would be to maintain genetic uniformity in the plant.

Accepted Answer

A) True 
 B)False

Exam 39: Flowering Plants: Reproduction

If a pollen grain lands on the stigma of a plant that is not related to that plant then the following would happen:

Correct AnswerverifiedShow Answer

Perhaps the most important single environmental factor responsible for flower formation is:

Correct AnswerverifiedShow Answer

Seedless fruits may be produced by use of certain plant hormones.

Correct AnswerverifiedShow Answer

An understanding of the role of abscisic acid (ABA) could help better understand why some seeds need light in order to germinate.

Correct AnswerverifiedShow Answer

The primary role of the two sperm produced in the germ tube of the pollen is to

Correct AnswerverifiedShow Answer

A fruit could best be described as:

Correct AnswerverifiedShow Answer

The seed coat often restrains embryos from growing and prevents the entry of water and oxygen to the seed.

Correct AnswerverifiedTrue

Which of the following is NOT a characteristic of seeds?

Correct AnswerverifiedShow Answer

Basically a flower is composed of four concentric rings or parts known as:

Correct AnswerverifiedShow Answer

One advantage of cross-pollination in plants would be to provide:

Correct AnswerverifiedShow Answer

Plants that are dioecious are best described as having:

Correct AnswerverifiedShow Answer

The term monoecious is best described as referring to the flower in what way?

Correct AnswerverifiedShow Answer

It has been estimated that 70% of human and animal food ________ comes from seed endosperm of grain crops.

Correct AnswerverifiedShow Answer

Fluorescence microscopy has been helpful in observing:

Correct AnswerverifiedShow Answer

The reason legumes are valued as food plants is because of their high content of:

Correct AnswerverifiedShow Answer

A plant that is dioecious could also have perfect flowers.

Correct AnswerverifiedShow Answer

Callose has what effect on pollen?

Correct AnswerverifiedShow Answer

The only triploid stage in the life cycle of a flowering plant is the:

Correct AnswerverifiedC

One application of knowledge of when flowering occurs is related to:

Correct AnswerverifiedA

One reason plant growers might use vegetative reproduction rather than conventional breeding of plants would be to maintain genetic uniformity in the plant.

Correct AnswerverifiedShow Answer

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True

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C

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A

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