Question 1

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.How could light striking the tip of the grass cause bending a few centimeters from the tip? Choose the most likely explanation from the below choices.

Accepted Answer

A)   The bending must start at the tip and move down the entire blade of grass.
B)   The light is being transmitted from the tip, to cells at the site of bending.
C)   Bending is independent of the source of light.
D)   The light must be striking the cells that bend as well.
E)   A hormone must be carrying the response from the tip to the site of bending.F) A) and E)
G) B) and E)

Question 2

You plant a seed into a pot containing some soil,and then add water and place the pot under a light.In the first week,before the seedling even emerged from the soil,carbon dioxide levels increased in the closed chamber.The developing plant was using which of the following as a source of energy during this first week?

Accepted Answer

A)   sugars from the soil
B)   water from the soil
C)   starch from the seed
D)   nutrients from the soil
E)   lightF) D) and E)
G) A) and B)

Question 3

Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of seeds an advantage?

Accepted Answer

A)   It allows fertilization in the absence of water.
B)   It allows fertilization in moist areas.
C)   It is necessary for sexual reproduction.
D)   It promotes pollination.
E)   It protects and nourishes the embryo.F) All of the above
G) A) and B)

Question 4

Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of flowers an advantage?

Accepted Answer

A)   It allows fertilization in moist areas.
B)   It allows fertilization in the absence of water.
C)   It protects and nourishes the embryo.
D)   It promotes pollination.
E)   It is necessary for sexual reproduction.F) A) and D)
G) None of the above

Question 5

Senescence means that

Accepted Answer

A)   a plant is aging towards death or dormancy.
B)   All of these answer options are correct.
C)   a plant is potentially going through leaf abscission.
D)   plant tissues are breaking down more molecules.
E)   a plant is doing less synthesis of molecules.F) C) and E)
G) D) and E)

Question 6

In plants,molecules that perceive the quality and quantity of light are

Accepted Answer

A)   chemoreceptors.
B)   photoreceptors.
C)   mechanoreceptors.
D)   gradient receptors.
E)   pressure receptors.F) A) and B)
G) C) and E)

Question 7

Three college students purchased a bag of fresh-picked,unripened apples from a nearby orchard.Keeping the apples in a paper bag for several days,the apples ripened.This was a response to the plant hormone

Accepted Answer

A)   ethylene.
B)   abscisic acid.
C)   auxin.
D)   gibberellin.
E)   jasmonic acid.F) A) and D)
G) D) and E)

Question 8

Whorl three of a flower is made up of the

Accepted Answer

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

Question 9

In all major groups of multicellular organisms,_______________ produces the cells that begin the haploid generation,and _________________ unites the gametes to begin the diploid generation.

Accepted Answer

A)   meiosis; fertilization
B)   mitosis; pollination
C)   pollination; fertilization
D)   fertilization; mitosis
E)   fertilization; meiosisF) D) and E)
G) C) and E)

Question 10

If you wanted a grass plant to bend to the right,where would you want to apply auxin?

Accepted Answer

A)   on the right side of the tip of the grass
B)   on the left side of the grass, a few centimeters down from the tip
C)   on the left side of the tip of the grass
D)   on the right side of the grass, a few centimeters down from the tipE) C) and D)
F) B) and D)

Question 11

Seedless watermelons come from seeds that are triploid and therefore do not develop properly.They are simply soft hulls that are easy to chew.

Accepted Answer

A) True 
 B)False

Question 12

The type of fruit that is derived from one flower with one carpel is a ______________ fruit.

Accepted Answer

A)   simple
B)   aggregate
C)   axillary
D)   multiple
E)   doubleF) C) and D)
G) A) and B)

Question 13

In biology lab,your teacher places petri dishes on the lab table.Upon examination,you observe that there are lumps of plant tissue,and you are told that they have been grown artificially and can produce new plants.Each lump is a(n)

Accepted Answer

A)   tetraploid zygote.
B)   stigma.
C)   amnion.
D)   scion.
E)   callus.F) A) and B)
G) All of the above

Question 14

Which animals were most likely to eat the hot peppers?

Accepted Answer

A)   cactus mice and pack rats
B)   thrashers
C)   pack rats
D)   cactus mice
E)   Cactus mice, pack rats, and thrashers all ate the peppers equally.F) A) and D)
G) None of the above

Question 15

What is the normal function of fruits?

Accepted Answer

A)   protect seeds
B)   attract pollinators and protect seeds
C)   protect and disperse seeds
D)   attract pollinators
E)   disperse seedsF) A) and B)
G) D) and E)

Question 16

What conclusion did the researchers draw from the results of the feeding preference studies?

Accepted Answer

A)   The capsaicin deterred the thrashers from eating and dispersing the seeds.
B)   The capsaicin deterred the mice and rats from eating and destroying the seeds.
C)   The capsaicin deterred the mice and rats from eating and dispersing the seeds.
D)   The capsaicin deterred the thrashers from eating and destroying the seeds.E) A) and B)
F) All of the above

Question 17

The number of similar anatomical parts called whorls that make up a complete flower is

Accepted Answer

A)   four.
B)   one.
C)   two.
D)   three.
E)   five.F) C) and D)
G) B) and D)

Question 18

Cocklebur will not flower if exposed to 8 hours of dark and 16 hours of light.It will flower if exposed to 16 hours of dark and 8 hours of light.However,if the 16 hours of dark is interrupted with a brief period of light,the cocklebur will not flower.Which of the following will trigger cocklebur to flower?

Accepted Answer

A)   long dark periods
B)   short dark periods
C)   short light periods
D)   long light periodsE) C) and D)
F) A) and D)

Question 19

Hiking a trail,you observe large white flowers,having large anthers,and producing a strong aroma,yet no pollinators are currently visible.The pollinators likely to pollinate these flowers are

Accepted Answer

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

Question 20

Pollination is the transfer of pollen from a(n) _____ to a receptive _____.

Accepted Answer

A)   ovary; stigma
B)   stigma; ovary
C)   stigma; anther
D)   anther; stigma
E)   None of the answer choices are correct.F) C) and D)
G) B) and E)

Exam 24: Reproduction and Development of Flowering Plants

The type of fruit that is derived from one flower with one carpel is a ______________ fruit.

Correct Answer
verified

Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of seeds an advantage?

Correct Answer
verified

Correct Answer
verified

Three college students purchased a bag of fresh-picked,unripened apples from a nearby orchard.Keeping the apples in a paper bag for several days,the apples ripened.This was a response to the plant hormone

Correct Answer
verified

What conclusion did the researchers draw from the results of the feeding preference studies?

Correct Answer
verified

In biology lab,your teacher places petri dishes on the lab table.Upon examination,you observe that there are lumps of plant tissue,and you are told that they have been grown artificially and can produce new plants.Each lump is a(n)

Correct Answer
verified

Senescence means that

Correct Answer
verified

Correct Answer
verified

Hiking a trail,you observe large white flowers,having large anthers,and producing a strong aroma,yet no pollinators are currently visible.The pollinators likely to pollinate these flowers are

Correct Answer
verified

What is the normal function of fruits?

Correct Answer
verified

In plants,molecules that perceive the quality and quantity of light are

Correct Answer
verified

Seedless watermelons come from seeds that are triploid and therefore do not develop properly.They are simply soft hulls that are easy to chew.

Correct Answer
verified

Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of flowers an advantage?

Correct Answer
verified

In all major groups of multicellular organisms,_ produces the cells that begin the haploid generation,and ___ unites the gametes to begin the diploid generation.

Correct Answer
verified

The number of similar anatomical parts called whorls that make up a complete flower is

Correct Answer
verified

If you wanted a grass plant to bend to the right,where would you want to apply auxin?

Correct Answer
verified

Pollination is the transfer of pollen from a(n) _ to a receptive _.

Correct Answer
verified

Whorl three of a flower is made up of the

Correct Answer
verified

Which animals were most likely to eat the hot peppers?

Correct Answer
verified

Correct Answer
verified

Exam 24: Reproduction and Development of Flowering Plants

The type of fruit that is derived from one flower with one carpel is a ______________ fruit.

Correct AnswerverifiedShow Answer

Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of seeds an advantage?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Three college students purchased a bag of fresh-picked,unripened apples from a nearby orchard.Keeping the apples in a paper bag for several days,the apples ripened.This was a response to the plant hormone

Correct AnswerverifiedShow Answer

What conclusion did the researchers draw from the results of the feeding preference studies?

Correct AnswerverifiedShow Answer

In biology lab,your teacher places petri dishes on the lab table.Upon examination,you observe that there are lumps of plant tissue,and you are told that they have been grown artificially and can produce new plants.Each lump is a(n)

Correct AnswerverifiedShow Answer

Senescence means that

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Hiking a trail,you observe large white flowers,having large anthers,and producing a strong aroma,yet no pollinators are currently visible.The pollinators likely to pollinate these flowers are

Correct AnswerverifiedShow Answer

What is the normal function of fruits?

Correct AnswerverifiedShow Answer

In plants,molecules that perceive the quality and quantity of light are

Correct AnswerverifiedShow Answer

Seedless watermelons come from seeds that are triploid and therefore do not develop properly.They are simply soft hulls that are easy to chew.

Correct AnswerverifiedShow Answer

Angiosperms owe their widespread distribution to their production of pollen,seeds,and flowers.Why is the production of flowers an advantage?

Correct AnswerverifiedShow Answer

In all major groups of multicellular organisms,_______________ produces the cells that begin the haploid generation,and _________________ unites the gametes to begin the diploid generation.

Correct AnswerverifiedShow Answer

The number of similar anatomical parts called whorls that make up a complete flower is

Correct AnswerverifiedShow Answer

If you wanted a grass plant to bend to the right,where would you want to apply auxin?

Correct AnswerverifiedShow Answer

Pollination is the transfer of pollen from a(n) _____ to a receptive _____.

Correct AnswerverifiedShow Answer

Whorl three of a flower is made up of the

Correct AnswerverifiedShow Answer

Which animals were most likely to eat the hot peppers?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

In all major groups of multicellular organisms,_ produces the cells that begin the haploid generation,and ___ unites the gametes to begin the diploid generation.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Pollination is the transfer of pollen from a(n) _ to a receptive _.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified