Question 1

Plant hormones are small organic molecules produced by the plants themselves.

Accepted Answer

A) True 
 B)False  True

Question 2

Stored food in a eudicot cotyledon was derived from

Accepted Answer

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

Question 3

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  True

Question 4

In a mature embryo, the epicotyl is the portion between the cotyledon(s) that contributes to root development.

Accepted Answer

A) True 
 B)False

Question 5

If strawberry plants do not produce seeds that are used for next year's crop, how are strawberry plants propagated?

Accepted Answer

A)  from flowers 
B)  from pollen 
C)  from the nodes of stolons 
D)  from tissue culture 
E)  from protoplasts 
A)  from flowers 
B)  from pollen 
C)  from the nodes of stolons 
D)  from tissue culture 
E)  from protoplasts

Question 6

Ovules contain the microspore mother cell.

Accepted Answer

A) True 
 B)False

Question 7

Plants can "migrate" from one area to another. Which of the following would allow a plant population to migrate the fastest?

Accepted Answer

A)  pollination 
B)  fertilization 
C)  germination 
D)  seed dispersal 
E)  asexual or vegetative propagation 
A)  pollination 
B)  fertilization 
C)  germination 
D)  seed dispersal 
E)  asexual or vegetative propagation

Question 8

A hormone called cytokinin was discovered in coconut milk and found to stimulate cell division. With this function, where else in a plant would you expect to find cytokinin?

Accepted Answer

A)  bark 
B)  pith 
C)  root tips 
D)  spongy mesophyll 
E)  xylem 
A)  bark 
B)  pith 
C)  root tips 
D)  spongy mesophyll 
E)  xylem

Question 9

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

Question 10

The male gametophyte in flowering plants will be found within the

Accepted Answer

A)  carpel. 
B)  ovary. 
C)  sepal. 
D)  filament. 
E)  pollen grain. 
A)  carpel. 
B)  ovary. 
C)  sepal. 
D)  filament. 
E)  pollen grain.

Question 11

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)  ethylene 
A)  indoleacetic acid 
B)  gibberellin 
C)  cytokinin 
D)  abscisic acid 
E)  ethylene

Question 12

Which structure is the only food source for a developing monocot embryo?

Accepted Answer

A)  radicle 
B)  cotyledon 
C)  endosperm 
D)  epicotyl 
E)  hypocotyl 
A)  radicle 
B)  cotyledon 
C)  endosperm 
D)  epicotyl 
E)  hypocotyl

Question 13

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. 
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.

Question 14

What pathway is directly responsible for producing the gametophytes during the alternation of generations in plants?

Accepted Answer

A)  mitosis 
B)  meiosis 
C)  binary fission 
D)  both mitosis and meiosis 
E)  None of the answer choices will produce gametophytes. 
A)  mitosis 
B)  meiosis 
C)  binary fission 
D)  both mitosis and meiosis 
E)  None of the answer choices will produce gametophytes.

Question 15

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. 
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.

Question 16

Plant hormones bring about a physiological response in the plant after binding to the nucleus of the plant cells.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following structures protects the embryo until conditions favor regrowth?

Accepted Answer

A)  embryo 
B)  endosperm 
C)  seed coat 
D)  ovary 
E)  sperm 
A)  embryo 
B)  endosperm 
C)  seed coat 
D)  ovary 
E)  sperm

Question 18

Which of the following is part of the male portion of the flower?

Accepted Answer

A)  filament 
B)  carpel 
C)  pistil 
D)  stigma 
E)  style 
A)  filament 
B)  carpel 
C)  pistil 
D)  stigma 
E)  style

Question 19

The protective sheath that first surrounds the plumule of a monocot is called the

Accepted Answer

A)  cotyledon. 
B)  coleoptile. 
C)  plumule. 
D)  radicle. 
E)  epicotyl. 
A)  cotyledon. 
B)  coleoptile. 
C)  plumule. 
D)  radicle. 
E)  epicotyl.

Question 20

Techniques for tissue culture vary, but most begin with cells from the meristem of the parent plant.

Accepted Answer

A) True 
 B)False

Exam 10: Plant Reproduction and Responses

Plant hormones are small organic molecules produced by the plants themselves.

Stored food in a eudicot cotyledon was derived from

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

In a mature embryo, the epicotyl is the portion between the cotyledon(s) that contributes to root development.

If strawberry plants do not produce seeds that are used for next year's crop, how are strawberry plants propagated?

Ovules contain the microspore mother cell.

Plants can "migrate" from one area to another. Which of the following would allow a plant population to migrate the fastest?

A hormone called cytokinin was discovered in coconut milk and found to stimulate cell division. With this function, where else in a plant would you expect to find cytokinin?

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

The male gametophyte in flowering plants will be found within the

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

Which structure is the only food source for a developing monocot embryo?

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?

What pathway is directly responsible for producing the gametophytes during the alternation of generations in plants?

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

Plant hormones bring about a physiological response in the plant after binding to the nucleus of the plant cells.

Which of the following structures protects the embryo until conditions favor regrowth?

Which of the following is part of the male portion of the flower?

The protective sheath that first surrounds the plumule of a monocot is called the

Techniques for tissue culture vary, but most begin with cells from the meristem of the parent plant.

The Study of Life

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