Question 1

Arrange the following structures from largest to smallest, assuming that they belong to two generations of the same angiosperm.
1)  ovary
2)  ovule
3)  egg
4)  carpel
5)  embryo sac

Accepted Answer

A)   4, 2, 1, 5, 3
B)   5, 4, 3, 1, 2
C)   5, 1, 4, 2, 3
D)   4, 1, 2, 5, 3E) B) and C)
F) B) and D)

Question 2

Which of the following pollinating agents is correctly matched with the type of plant it helps pollinate?

Accepted Answer

A)   birds-smelly flowers
B)   bats-colorful flowers
C)   wind-grass flowers
D)   bees-white flowersE) A) and B)
F) B) and D)

Question 3

Which of the following is the strongest environmental argument against the introduction of genetically modified crops?

Accepted Answer

A)   Lateral transfer of genes between species does not occur naturally.
B)   Transgenic crops can no longer reproduce sexually and would go extinct in nature.
C)   The pollen of genetically modified flowers would be sterile.
D)   Transgenic crops hybridize with related native species, allowing modified traits to spread in the wild.E) B) and D)
F) A) and D)

Question 4

Which of the following is necessary for a generative cell in a pollen grain to produce two sperm cells?

Accepted Answer

A)   a single mitotic division
B)   a single meiotic division
C)   two mitotic divisions
D)   two meiotic divisionsE) None of the above
F) All of the above

Question 5

What is the typical ploidy of endosperm cells in an angiosperm seed?

Accepted Answer

A)   2n
B)   3n
C)   4n
D)   nE) B) and C)
F) A) and D)

Question 6

Which of the following statements about fruit ripening is an example of positive feedback?

Accepted Answer

A)   Chemical signals increase enzymatic activity in fruit to convert sugars into starches, thicken pulp, and maintain color in the fruit.
B)   Once seeds reach maturity, chemical signals block enzymatic steps that normally convert sugars into starches, and sugars accumulate from photosynthetic activity within the fruit.
C)   Chemical signals stimulate enzymatic activities that convert starches into sugars, soften fruit pulp, and produce more chemical signals.
D)   Chemical signals shut down enzymatic activities that convert starches into sugars, soften fruit pulp, and color change of fruit.E) A) and B)
F) None of the above

Question 7

Farmers traditionally kept some of the seeds from their best plants in one season to plant the following year. Now that farmers mostly plant hybrid seed this practice is no longer effective because ________.

Accepted Answer

A)   hybrid seed is homozygous, so it is not self-fertile
B)   hybrid plants are bred to be incompatible
C)   hybrid seeds are heterozygous and not true-breeding
D)   hybrid plants are genetically engineered and could be harmful if used for new seedE) A) and D)
F) A) and C)

Question 8

In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?

Accepted Answer

A)   stigma → style → ovary → micropyle
B)   stigma → ovary → style → micropyle
C)   micropyle→ ovary → stigma → style
D)   ovary → style → stigma → micropyleE) A) and B)
F) None of the above

Question 9

Which of the following is the correct order of floral organs from the outside to the inside of a complete flower?

Accepted Answer

A)   petals → sepals → stamens → carpels
B)   sepals → stamens → petals → carpels
C)   spores → gametes → zygote → embryo
D)   sepals → petals → stamens → carpelsE) C) and D)
F) All of the above

Question 10

The table below shows some of the floral characteristics of four different flower species. Which species, A, B, C, or D, is most likely pollinated by a bat?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) A) and D)
F) B) and D)

Question 11

Based on the table below, which species has fruits adapted for dispersal by fruit-eating animals (frugivores) ?

Accepted Answer

A)   A
B)   B
C)   C
D)   DE) B) and C)
F) B) and D)

Question 12

Which of the following best describes double fertilization in flowering plants?

Accepted Answer

A)   flowers must be pollinated twice to yield both fruits and seeds
B)   one sperm fertilizes the egg, and a second sperm fertilizes both polar nuclei
C)   the egg of the embryo sac is diploid
D)   two sperms are needed to fertilize the eggE) A) and C)
F) None of the above

Question 13

Which of the following are potential benefits of producing genetically modified crops?
I. create crops that can grow on land previously unsuitable for agriculture
II. create crops with better potential for biofuel production
III. create crops with better nutritional attributes
IV. increase crop yield

Accepted Answer

A)   III only
B)   III and IV only
C)   II III and IV only
D)   I, II, III, and IVE) C) and D)
F) B) and C)

Question 14

A hypothetical dye stains sporophyte tissue blue and gametophyte tissue red. What would a researcher most likely observe if a section through the center of a seed was stained with this dye?

Accepted Answer

A)   a pure blue sample
B)   a red center surrounded by blue
C)   a blue center surrounded by red
D)   a blue center, surrounded by red, inside a blue exteriorE) A) and B)
F) A) and C)

Question 15

Which of the following is the best argument for pursuing plant biotechnology?

Accepted Answer

A)   Genetically modified (GM)  plants can provide greater plant productivity on the same amount of land.
B)   GM plants can reduce reliance on imported oil.
C)   Genetic engineering can decrease genetic diversity of crop plants making them more fit for their environment.
D)   Genetic engineering can make it easier to overcome pollination incompatibility.E) B) and D)
F) C) and D)

Question 16

Which of the following best describes a selective advantage of retaining the gametophyte within the living sporophyte of land plants?

Accepted Answer

A)   The gametophyte is able to grow much larger than if it was independent.
B)   The gametophyte can be raised into the air, exposing it to more light for photosynthesis.
C)   Meiosis can now occur in haploid gametophyte cells.
D)   Nutrients needed for the gametophyte to produce gametes can be provided by the parent plant.E) B) and C)
F) C) and D)

Question 17

The vast number and variety of flowering plant species is probably related to which of the following?

Accepted Answer

A)   soils
B)   pollinators
C)   herbivores
D)   climatic conditionsE) B) and D)
F) A) and C)

Question 18

A summer occupation in maize-growing regions is detasseling the maize: removing unwanted male flowers so that female flowers on the same plant are pollinated by the desired pollen for the hybrid maize. Which of the following best describes maize plant flowers?

Accepted Answer

A)   They have both stamens and carpels and the plant is dioecious.
B)   They have both stamens and carpels and the plant is monoecious.
C)   They have either stamens or carpels and the plant is dioecious.
D)   They have either stamens or carpels and the plant is monoecious.E) A) and B)
F) C) and D)

Question 19

"Golden Rice" is a GM crop designed to enhance which of the following traits?

Accepted Answer

A)   increase resistance to various herbicides, making it practical to weed rice fields with those herbicides
B)   produce a toxin that reduces damage from insect pests
C)   produce larger grains that increase crop yields and profits
D)   increase vitamin A content, a common dietary deficiency in developing countriesE) A) and B)
F) B) and C)

Question 20

Which of the following flower parts develops into the pulp of a fleshy fruit?

Accepted Answer

A)   stigma
B)   style
C)   ovule
D)   ovaryE) B) and C)
F) A) and B)

Exam 38: Reproduction of Flowering Plants

A hypothetical dye stains sporophyte tissue blue and gametophyte tissue red. What would a researcher most likely observe if a section through the center of a seed was stained with this dye?

Correct Answer
verified

Which of the following best describes a selective advantage of retaining the gametophyte within the living sporophyte of land plants?

Correct Answer
verified

The table below shows some of the floral characteristics of four different flower species. Which species, A, B, C, or D, is most likely pollinated by a bat?

Correct Answer
verified

Based on the table below, which species has fruits adapted for dispersal by fruit-eating animals (frugivores) ?

Correct Answer
verified

In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?

Correct Answer
verified

A summer occupation in maize-growing regions is detasseling the maize: removing unwanted male flowers so that female flowers on the same plant are pollinated by the desired pollen for the hybrid maize. Which of the following best describes maize plant flowers?

Correct Answer
verified

"Golden Rice" is a GM crop designed to enhance which of the following traits?

Correct Answer
verified

Which of the following is the strongest environmental argument against the introduction of genetically modified crops?

Correct Answer
verified

The vast number and variety of flowering plant species is probably related to which of the following?

Correct Answer
verified

Which of the following flower parts develops into the pulp of a fleshy fruit?

Correct Answer
verified

What is the typical ploidy of endosperm cells in an angiosperm seed?

Correct Answer
verified

Arrange the following structures from largest to smallest, assuming that they belong to two generations of the same angiosperm. 1) ovary 2) ovule 3) egg 4) carpel 5) embryo sac

Correct Answer
verified

Which of the following statements about fruit ripening is an example of positive feedback?

Correct Answer
verified

Farmers traditionally kept some of the seeds from their best plants in one season to plant the following year. Now that farmers mostly plant hybrid seed this practice is no longer effective because ________.

Correct Answer
verified

Correct Answer
verified

Which of the following is the best argument for pursuing plant biotechnology?

Correct Answer
verified

Which of the following best describes double fertilization in flowering plants?

Correct Answer
verified

Which of the following pollinating agents is correctly matched with the type of plant it helps pollinate?

Correct Answer
verified

Which of the following is the correct order of floral organs from the outside to the inside of a complete flower?

Correct Answer
verified

Which of the following is necessary for a generative cell in a pollen grain to produce two sperm cells?

Correct Answer
verified

Exam 38: Reproduction of Flowering Plants

A hypothetical dye stains sporophyte tissue blue and gametophyte tissue red. What would a researcher most likely observe if a section through the center of a seed was stained with this dye?

Correct AnswerverifiedShow Answer

Which of the following best describes a selective advantage of retaining the gametophyte within the living sporophyte of land plants?

Correct AnswerverifiedShow Answer

The table below shows some of the floral characteristics of four different flower species. Which species, A, B, C, or D, is most likely pollinated by a bat?

Correct AnswerverifiedShow Answer

Based on the table below, which species has fruits adapted for dispersal by fruit-eating animals (frugivores) ?

Correct AnswerverifiedShow Answer

In a typical angiosperm, what is the sequence of structures encountered by the tip of a growing pollen tube on its way to the egg?

Correct AnswerverifiedShow Answer

A summer occupation in maize-growing regions is detasseling the maize: removing unwanted male flowers so that female flowers on the same plant are pollinated by the desired pollen for the hybrid maize. Which of the following best describes maize plant flowers?

Correct AnswerverifiedShow Answer

"Golden Rice" is a GM crop designed to enhance which of the following traits?

Correct AnswerverifiedShow Answer

Which of the following is the strongest environmental argument against the introduction of genetically modified crops?

Correct AnswerverifiedShow Answer

The vast number and variety of flowering plant species is probably related to which of the following?

Correct AnswerverifiedShow Answer

Which of the following flower parts develops into the pulp of a fleshy fruit?

Correct AnswerverifiedShow Answer

What is the typical ploidy of endosperm cells in an angiosperm seed?

Correct AnswerverifiedShow Answer

Arrange the following structures from largest to smallest, assuming that they belong to two generations of the same angiosperm. 1) ovary 2) ovule 3) egg 4) carpel 5) embryo sac

Correct AnswerverifiedShow Answer

Which of the following statements about fruit ripening is an example of positive feedback?

Correct AnswerverifiedShow Answer

Farmers traditionally kept some of the seeds from their best plants in one season to plant the following year. Now that farmers mostly plant hybrid seed this practice is no longer effective because ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is the best argument for pursuing plant biotechnology?

Correct AnswerverifiedShow Answer

Which of the following best describes double fertilization in flowering plants?

Correct AnswerverifiedShow Answer

Which of the following pollinating agents is correctly matched with the type of plant it helps pollinate?

Correct AnswerverifiedShow Answer

Which of the following is the correct order of floral organs from the outside to the inside of a complete flower?

Correct AnswerverifiedShow Answer

Which of the following is necessary for a generative cell in a pollen grain to produce two sperm cells?

Correct AnswerverifiedShow Answer

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