Question 1

Typically in a flower the sepals _____,while the petals _____.

Accepted Answer

A)   are in a whorl around the flower; comprise the male and female flower parts
B)   produce pollen by meiosis; produce eggs by meiosis
C)   are soft, colorful, and attract pollinators; are green, fleshy, and protect the flower
D)   are green, fleshy, and protect the flower; are soft, colorful, and attract pollinators
E)   produce pollen; receive pollenF) A) and C)
G) A) and E) D

Question 2

A sweet substance used by many angiosperms to lure pollinators is

Accepted Answer

A)   "honey dew."
B)   phloem sap.
C)   honey.
D)   pollen.
E)   nectar.F) B) and C)
G) C) and D)

Question 3

You plant a seed into a pot containing some soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.This indicated that _________ was occurring.

Accepted Answer

A)   sucrose production
B)   photosynthesis
C)   fertilization
D)   cellular respiration
E)   alcohol fermentationF) B) and C)
G) A) and E)

Question 4

The egg-bearing structure of a flower is the

Accepted Answer

A)   stigma.
B)   ovary.
C)   style.
D)   sepal.
E)   anther.F) B) and D)
G) A) and E)

Question 5

As a seed germinates,its shoot points upward toward light,and its roots grows downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots respond to gravity?

Accepted Answer

A)   through thigmotropism
B)   through circadian rhythms
C)   by the absorption of light by phytochromes
D)   by the movement of statoliths within the cell
E)   by sensing the photoperiodF) A) and D)
G) A) and E)

Question 6

A tissue that is formed from a triploid nucleus and that stores food for the developing plant embryo is the

Accepted Answer

A)   mesosperm.
B)   microspore.
C)   endosperm.
D)   endoderm.
E)   mesoderm.F) A) and C)
G) A) and B)

Question 7

The root and shoot apical meristems form at the same point in the plant embryo.

Accepted Answer

A) True 
 B)False

Question 8

Packages of vegetable seeds typically include an ideal planting depth.If planted too deep,the seeds will not germinate.How do the plants sense if they are too deep?

Accepted Answer

A)   Thigmotropism is disrupted.
B)   The apical meristem cannot reach the surface of the soil
C)   Statoliths can no longer move.
D)   Phytochromes can no longer absorb light.
E)   Circadian rhythms are disrupted.F) A) and B)
G) B) and E)

Question 9

If a gardener cuts the apical meristem of a plant,lateral buds begin to grow which causes a bushier shape to develop.This is because the apical meristem normally secretes auxins that do which of the following?

Accepted Answer

A)   stimulate the growth of lateral buds
B)   suppress the growth of the apical meristem
C)   stimulate the growth of roots
D)   stimulate the growth of the apical meristem
E)   suppress the growth of lateral budsF) B) and E)
G) A) and E)

Question 10

Coconuts are fruits containing seeds that are usually wind dispersed.

Accepted Answer

A) True 
 B)False

Question 11

Peppers that produce more capsaicin would lose fewer seeds to herbivores.This would lead to which of the following?

Accepted Answer

A)   directional selection
B)   stabilizing selection
C)   sexual selection
D)   artificial selection
E)   disruptive selectionF) A) and D)
G) D) and E)

Question 12

On a field trip,clearing clouds and warming temperatures reveal red flowers along the trail.You will expect them to be visited and pollinated by

Accepted Answer

A)   birds.
B)   beetles.
C)   bees.
D)   bats.
E)   moths.F) A) and D)
G) A) and C)

Question 13

The type of fruit that is derived from one flower with many separate carpels is a _____________ fruit.

Accepted Answer

A)   axillary
B)   multiple
C)   double
D)   aggregate
E)   simpleF) C) and D)
G) A) and B)

Question 14

Clones are

Accepted Answer

A)   offspring that are genetically identical to their parent.
B)   offspring that are produced sexually and are genetically identical to their parent.
C)   produced by sexual reproduction.
D)   offspring that are produced asexually and are genetically identical to their parent.
E)   produced by asexual reproduction.F) C) and D)
G) A) and B) D

Question 15

The ___ is an example of a(n) ___ fruit that is derived from tightly clustered flowers whose ovaries have fused.

Accepted Answer

A)   cherry; simple
B)   tomato; berry
C)   strawberry; aggregate
D)   pineapple; multiple
E)   burdock; fur-dispersedF) A) and E)
G) A) and D)

Question 16

As a seed germinates,its shoot points upward toward light,and its roots grow downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots and shoots grow in opposite directions as the plant is rotated?

Accepted Answer

A)   The circadian rhythms of roots and shoots are opposite.
B)   The absorption of light by phytochromes only occurs in shoots.
C)   through differences in thigmotropism
D)   The roots and shoots respond oppositely to auxin.
E)   Statoliths move in the opposite direction of roots and shoots.F) C) and D)
G) C) and E) D

Question 17

Cytokinins are water-soluble hormones produced in the root apical meristem and stimulate the growth of lateral buds.How do cytokinins reach the lateral buds?

Accepted Answer

A)   through the phloem or xylem
B)   through the xylem
C)   through the phloem
D)   by diffusion as a gas
E)   through the phloem or by diffusion as a gasF) D) and E)
G) C) and E)

Question 18

A biochemical synthesized in small quantities in one part of an organism and transported to another,where a target cell is affected is a(n)

Accepted Answer

A)   scion.
B)   enzyme.
C)   callus.
D)   spore.
E)   hormone.F) D) and E)
G) All of the above

Question 19

The size of a plant's seeds reflects an evolutionary trade-off.Large,heavy seeds contain ample nutrient reserves to fuel seedling growth but may not travel far.Small seeds,on the other hand,store limited nutrients but tend to disperse far and wide.The crops that humans cultivate typically have larger seeds than do their wild ancestors.How has human farming altered the evolution of these crops?

Accepted Answer

A)   We have removed the selection pressure favoring small seed size.
B)   Because we spread the seeds, we can spread more smaller seeds per acre, thus favoring these plants.
C)   We have created crop plants that are more competitive in the wild than their ancestors.
D)   We grow the plants under conditions that favor the growth of larger seeds.
E)   By using fertilizers, the seeds do not need to store as many nutrients.F) A) and C)
G) B) and D)

Question 20

The plant hormone that stimulates cell division in seeds and fruits is

Accepted Answer

A)   auxin.
B)   cytokinin.
C)   abscisic acid.
D)   jasmonic acid.
E)   ethylene.F) None of the above
G) B) and C)

Exam 24: Reproduction and Development of Flowering Plants

Typically in a flower the sepals _,while the petals _.

Correct Answer
verified
D

A sweet substance used by many angiosperms to lure pollinators is

Correct Answer
verified

You plant a seed into a pot containing some soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.This indicated that _________ was occurring.

Correct Answer
verified

The egg-bearing structure of a flower is the

Correct Answer
verified

As a seed germinates,its shoot points upward toward light,and its roots grows downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots respond to gravity?

Correct Answer
verified

A tissue that is formed from a triploid nucleus and that stores food for the developing plant embryo is the

Correct Answer
verified

The root and shoot apical meristems form at the same point in the plant embryo.

Correct Answer
verified

Packages of vegetable seeds typically include an ideal planting depth.If planted too deep,the seeds will not germinate.How do the plants sense if they are too deep?

Correct Answer
verified

If a gardener cuts the apical meristem of a plant,lateral buds begin to grow which causes a bushier shape to develop.This is because the apical meristem normally secretes auxins that do which of the following?

Correct Answer
verified

Coconuts are fruits containing seeds that are usually wind dispersed.

Correct Answer
verified

Peppers that produce more capsaicin would lose fewer seeds to herbivores.This would lead to which of the following?

Correct Answer
verified

On a field trip,clearing clouds and warming temperatures reveal red flowers along the trail.You will expect them to be visited and pollinated by

Correct Answer
verified

The type of fruit that is derived from one flower with many separate carpels is a _____________ fruit.

Correct Answer
verified

Clones are

Correct Answer
verified
D

The _ is an example of a(n) _ fruit that is derived from tightly clustered flowers whose ovaries have fused.

Correct Answer
verified

As a seed germinates,its shoot points upward toward light,and its roots grow downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots and shoots grow in opposite directions as the plant is rotated?

Correct Answer
verified
D

Cytokinins are water-soluble hormones produced in the root apical meristem and stimulate the growth of lateral buds.How do cytokinins reach the lateral buds?

Correct Answer
verified

A biochemical synthesized in small quantities in one part of an organism and transported to another,where a target cell is affected is a(n)

Correct Answer
verified

Correct Answer
verified

The plant hormone that stimulates cell division in seeds and fruits is

Correct Answer
verified

Exam 24: Reproduction and Development of Flowering Plants

Typically in a flower the sepals _____,while the petals _____.

Correct AnswerverifiedD

A sweet substance used by many angiosperms to lure pollinators is

Correct AnswerverifiedShow Answer

You plant a seed into a pot containing some soil,and then add water and place the pot under a light.After the seedling emerged,complete with two green leaves,the carbon dioxide levels decreased in the closed chamber.This indicated that _________ was occurring.

Correct AnswerverifiedShow Answer

The egg-bearing structure of a flower is the

Correct AnswerverifiedShow Answer

As a seed germinates,its shoot points upward toward light,and its roots grows downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots respond to gravity?

Correct AnswerverifiedShow Answer

A tissue that is formed from a triploid nucleus and that stores food for the developing plant embryo is the

Correct AnswerverifiedShow Answer

The root and shoot apical meristems form at the same point in the plant embryo.

Correct AnswerverifiedShow Answer

Packages of vegetable seeds typically include an ideal planting depth.If planted too deep,the seeds will not germinate.How do the plants sense if they are too deep?

Correct AnswerverifiedShow Answer

If a gardener cuts the apical meristem of a plant,lateral buds begin to grow which causes a bushier shape to develop.This is because the apical meristem normally secretes auxins that do which of the following?

Correct AnswerverifiedShow Answer

Coconuts are fruits containing seeds that are usually wind dispersed.

Correct AnswerverifiedShow Answer

Peppers that produce more capsaicin would lose fewer seeds to herbivores.This would lead to which of the following?

Correct AnswerverifiedShow Answer

On a field trip,clearing clouds and warming temperatures reveal red flowers along the trail.You will expect them to be visited and pollinated by

Correct AnswerverifiedShow Answer

The type of fruit that is derived from one flower with many separate carpels is a _____________ fruit.

Correct AnswerverifiedShow Answer

Clones are

Correct AnswerverifiedD

The ___ is an example of a(n) ___ fruit that is derived from tightly clustered flowers whose ovaries have fused.

Correct AnswerverifiedShow Answer

As a seed germinates,its shoot points upward toward light,and its roots grow downward into the soil.Turn the plant sideways,and the stem and roots bend according to the new direction of gravity.How do roots and shoots grow in opposite directions as the plant is rotated?

Correct AnswerverifiedD

Cytokinins are water-soluble hormones produced in the root apical meristem and stimulate the growth of lateral buds.How do cytokinins reach the lateral buds?

Correct AnswerverifiedShow Answer

A biochemical synthesized in small quantities in one part of an organism and transported to another,where a target cell is affected is a(n)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The plant hormone that stimulates cell division in seeds and fruits is

Correct AnswerverifiedShow Answer

Typically in a flower the sepals _,while the petals _.

Correct Answer
verified
D

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verified
D

The _ is an example of a(n) _ fruit that is derived from tightly clustered flowers whose ovaries have fused.

Correct Answer
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verified
D

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