Question 1

What accounts for the attractiveness of many flowers that helps enhance their reproductive opportunities?

Accepted Answer

A)  petals
B)  sepals
C)  carpels
D)  stamens
E)  ovariesF) B) and E)
G) C) and D)

Question 2

What would be the outcome of applying ethylene to a bushel of oranges?

Accepted Answer

A)  Ethylene stimulates cellulase,which will hydrolyze the cellulose in plant cell walls.This will cause the fruit to ripen.
B)  Ethylene will initiate and maintain seed dormancy as well as bring about the closure of the stomata.
C)  Ethylene stimulates cellulase,which will hydrolyze the proteins in plant cell walls.This will cause the fruit to ripen.
D)  Ethylene stimulates cellulase,which will hydrolyze the lipids in plant cell walls.This will cause the fruit to ripen.
E)  Ethylene stimulates cell division,which will cause the fruit to ripen.F) B) and C)
G) A) and E)

Question 3

Which of the following methods of reproduction is NOT asexual?

Accepted Answer

A)  runners and stolons
B)  rhizomes
C)  cuttings
D)  grafting and suckers
E)  floweringF) C) and D)
G) A) and E)

Question 4

Which of the following plant hormones prevents senescence and can initiate leaf growth?

Accepted Answer

A)  indoleacetic acid
B)  gibberellin
C)  cytokinin
D)  abscisic acid
E)  ethyleneF) All of the above
G) A) and C)

Question 5

Asexual reproduction in plants does NOT involve

Accepted Answer

A)  daughter plants being genetically identical to the parent plant.
B)  the production of gametes.
C)  a portion of one plant giving rise to a completely new plant.
D)  vegetative propagation.
E)  the use of runners.F) A) and B)
G) B) and E)

Question 6

The pollen grain contains the

Accepted Answer

A)  sperm.
B)  egg.
C)  embryo.
D)  endosperm.
E)  anther.F) All of the above
G) A) and B)

Question 7

Peas and beans are considered legumes.Why?

Accepted Answer

A)  A legume is a fruit that splits along two sides when mature.
B)  They are both simple fruits.
C)  The actual seed is inside the pod.
D)  Both are green when ripe.
E)  Both develop relationships with nitrogen-fixing bacteria.F) A) and B)
G) C) and D)

Question 8

Cross-pollination occurs when pollen from an anther of one plant is transferred to the stigma of another plant of the same species.

Accepted Answer

A) True 
 B)False

Question 9

A seed does NOT contain the

Accepted Answer

A)  embryo.
B)  endosperm.
C)  seed coat.
D)  ovary.
E)  developing sporophyte.F) D) and E)
G) All of the above

Question 10

Which of the following is NOT an advantage of tissue culture?

Accepted Answer

A)  Plant tissue can be used to produce medicines such as digitoxin and other products for the treatment of human disease.
B)  Tissue culture allows the production of healthier plant varieties.
C)  New plant varieties can be formed by using somatic embryos.
D)  The use of transgenic plants has led to a serious decline in crop production throughout the world.
E)  Engineered plants are resistant to herbicides and disease.F) D) and E)
G) A) and C)

Question 11

Stored food in a cotyledon was derived from

Accepted Answer

A)  part of the stigma.
B)  the fruit.
C)  triploid endosperm.
D)  the egg nucleus.
E)  the ovary.F) A) and E)
G) A) and D)

Question 12

Which of the following is NOT a component of the carpel of a flower?

Accepted Answer

A)  anther
B)  stigma
C)  style
D)  ovary
E)  ovuleF) B) and D)
G) B) and C)

Question 13

In asexual reproduction in plants,there is only one parent,instead of two.

Accepted Answer

A) True 
 B)False

Question 14

Hemp (Cannabis sativa) is a dioecious plant.This means that the flowers of hemp

Accepted Answer

A)  are complete.
B)  are incomplete.
C)  are perfect.
D)  contain both stamens and carpels.
E)  contain both petals and sepals.F) A) and B)
G) A) and C)

Question 15

Plants could readily develop seasonal responses based on temperature changes,but have evolved their rhythms based on a comparison of daylight and darkness.Why has the day-night ratio system been selected?

Accepted Answer

A)  Temperature has no effect upon plant biochemistry.
B)  Temperature is a gradation,but day/night is all or nothing.
C)  A plant's nervous system is tuned to light stimuli and not to temperature stimuli.
D)  Temperatures fluctuate widely across seasons and from year to year,but photoperiod comparisons are a more reliable indicator of season.
E)  Having a day-night system makes plants more likely to be an evolutionary success since animals follow day-night cycles as well.F) D) and E)
G) A) and E)

Question 16

Which statement is NOT true about the life cycle of flowering plants?

Accepted Answer

A)  The sporophyte is diploid.
B)  The sporophyte produces two different types of spores.
C)  The female gametophyte is the seed.
D)  The male gametophyte is the pollen grain.
E)  The female gametophyte is retained within the body of the sporophyte parent generation.F) D) and E)
G) B) and E)

Question 17

After a seed has been produced,it often has a time during which no growth occurs called

Accepted Answer

A)  pre-germination.
B)  senescence.
C)  suspended animation.
D)  dormancy.
E)  hibernation.F) B) and C)
G) C) and E)

Question 18

You are examining a seed with tiny white plumes attached to it.How is this type of seed most likely dispersed?

Accepted Answer

A)  by animals who eat it
B)  by floating on water
C)  by the wind
D)  by attaching to the fur of animals
E)  by bursting forth from the seed podF) B) and D)
G) A) and D)

Question 19

Which of the following is the correct sequence for the germination of the eudicot seed?

Accepted Answer

A)  The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo.As the embryo emerges,from the soil it consumes the nutrients and develops the shoot.The hypocotyl becomes part of the stem and the radicle develops into the roots.
B)  The cotyledon was absorbed by the endosperm and supplies the nutrients to the embryo.As the embryo emerges from the soil,it consumes the nutrients and develops the shoot.The hypocotyl becomes part of the stem and the radicle develops into the roots.
C)  The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo.As the embryo emerges from the soil,it consumes the nutrients and develops the shoot.The radicle becomes part of the stem and the hypocotyl develops into the roots.
D)  The pericarp has absorbed the endosperm and supplies the nutrients to the embryo.As the embryo emerges from the soil,it consumes the nutrients and develops the shoot.The hypocotyl becomes part of the stem and the radicle develops into the roots.
E)  The two cotyledons have absorbed the endosperm and supply the nutrients to the embryo.As the embryo emerges from the soil,it consumes the nutrients and develops the shoot.The plumule and the radicle push through the coleorhiza during germination.F) All of the above
G) A) and E)

Question 20

The response of plants to the relative length of light and darkness is termed

Accepted Answer

A)  phototropism.
B)  photosynthesis.
C)  photoperiodism.
D)  translocation.
E)  transpiration.F) A) and D)
G) B) and D)

Exam 10: Plant Reproduction and Responses

The response of plants to the relative length of light and darkness is termed

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What accounts for the attractiveness of many flowers that helps enhance their reproductive opportunities?

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What would be the outcome of applying ethylene to a bushel of oranges?

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Which of the following is NOT a component of the carpel of a flower?

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You are examining a seed with tiny white plumes attached to it.How is this type of seed most likely dispersed?

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Asexual reproduction in plants does NOT involve

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Hemp (Cannabis sativa) is a dioecious plant.This means that the flowers of hemp

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Which of the following methods of reproduction is NOT asexual?

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A seed does NOT contain the

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Which of the following is NOT an advantage of tissue culture?

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Which of the following is the correct sequence for the germination of the eudicot seed?

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Plants could readily develop seasonal responses based on temperature changes,but have evolved their rhythms based on a comparison of daylight and darkness.Why has the day-night ratio system been selected?

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The pollen grain contains the

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In asexual reproduction in plants,there is only one parent,instead of two.

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Peas and beans are considered legumes.Why?

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Which of the following plant hormones prevents senescence and can initiate leaf growth?

Correct AnswerverifiedShow Answer

Cross-pollination occurs when pollen from an anther of one plant is transferred to the stigma of another plant of the same species.

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Which statement is NOT true about the life cycle of flowering plants?

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After a seed has been produced,it often has a time during which no growth occurs called

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Stored food in a cotyledon was derived from

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