Question 1

A genus of primarily wind-pollinated plants includes one unusual species that has evolved to be pollinated by insects.Several morphological changes have accompanied this adaptation.The ________ are more colorful,there is a nectary at the base of the ________,the ________ are shorter and produce sticky pollen,and the ________ are stickier for enhanced pollen capture.

Accepted Answer

A)  petals; stamens; sepals; carpels
B)  petals; sepals; stamens; carpels
C)  stamens; carpels; petals; sepals
D)  petals; sepals; carpels; stamensE) A) and C)
F) A) and D)

Question 2

Germination requires the use of metabolic reserves in the seed.Which of these compartments contains starch used to fuel early seedling growth?

Accepted Answer

A)  amyloplasts
B)  protoplasts
C)  chloroplasts
D)  chromoplasts
E)  mitochondriaF) All of the above
G) A) and B)

Question 3

A researcher is investigating the morphology of complete flowers.Which of the following organs must his flowers contain?

Accepted Answer

A)  calyx,corolla,receptacle,and carpels
B)  calyx,corolla,carpels,and ovules
C)  calyx,corolla,stamens,and anthers
D)  calyx,corolla,carpels,and pistils
E)  calyx,corolla,androecium,and gynoeciumF) A) and C)
G) A) and D)

Question 4

The developmental transition during which plants become able to respond to external and/or internal signals that promote flowering is known as

Accepted Answer

A)  cloning.
B)  initiation.
C)  abscission.
D)  perennial development.
E)  phase change.F) C) and D)
G) None of the above

Question 5

What are the "seed leaves" that grow from bulges on the embryo called?

Accepted Answer

A)  radicles
B)  embryo sacs
C)  petioles
D)  cotyledons
E)  ovulesF) A) and E)
G) C) and D)

Question 6

Which tissue can not divide to give rise to identical progeny in a plant that reproduces asexually?

Accepted Answer

A)  root
B)  stem
C)  leaf
D)  pollen grain
E)  ovuleF) B) and E)
G) A) and E)

Question 7

Dandelions develop seeds by apomixis.What benefits does this strategy provide over vegetative or sexual reproduction?

Accepted Answer

A)  Apomixis makes the dandelions more resistant to herbicides.
B)  Apomixis provides the benefits of seed dispersal,while maintaining a genome adapted to a given climate.
C)  Apomixis is beneficial in sheltered areas where wind pollination would be difficult.
D)  Apomixis is beneficial for plants that attract a diverse mix of bees and other pollinators.E) B) and D)
F) C) and D)

Question 8

Endosperm tissue of angiosperms has what ploidy level?

Accepted Answer

A)  n
B)  2n
C)  3n
D)  4n
E)  8nF) B) and C)
G) A) and E)

Question 9

You are a landscape architect working on the grounds of a large estate.After you plant a dozen trees,the owner says,"There's been a mistake.The flowers on some of these willow trees look totally different! I specifically asked for Salix alba.You must have planted two different species." You refer to your tree guide,and read: "Salix alba - species of willow native to Europe and Asia,noted for the white undersides of leaves.Insect pollinated,dioecious.Grows 10-30m tall." How do you respond to the client?

Accepted Answer

A)  "Sorry about that sir,I will dig up the wrong trees right away."
B)  "Don't worry,the trees with the smaller flowers just haven't undergone phase change yet."
C)  "Don't worry,when the shorter trees reach full size,they will grow the other kind of flower."
D)  "Don't worry,Salix alba is dioecious,meaning each tree has either male or female flowers.That is why they look different."E) B) and C)
F) A) and B)

Question 10

Which of the following statements about the angiosperm embryo sac is FALSE?

Accepted Answer

A)  It contains eight nuclei.
B)  It is the gametophyte generation of the plant.
C)  The nuclei within the embryo sac are diploid.
D)  The synergids flank the egg cell.
E)  The embryo sac nuclei are the product of mitotic division of a megaspore.F) A) and C)
G) A) and B)

Question 11

How could you monitor flower determination in a plant that is mutant for all three class E SEP genes?

Accepted Answer

A)  You cannot,because the class E mutant cannot make proper flowers.
B)  Look for formation of sepals and petals.
C)  Measure levels of SEP protein.
D)  Measure levels of LEAFY and AP1 proteins.E) A) and C)
F) B) and D)

Question 12

Scientists have confirmed by carbon dating that seeds dormant for up to 2000 years can successfully germinate.Based on the requirements for germination,what research expedition should you join in order to retrieve some ancient but viable seeds?

Accepted Answer

A)  A trip to Indonesia,where the civet cat eats and expels coffee beans,producing a gourmet coffee known as Kopi Luwak.
B)  A trip to the Irish marsh,where wet peat creates anaerobic conditions,and your colleagues hope to unearth a bog mummy.
C)  A trip to the Burgess Shale in Canada,where your paleontologist colleagues have found fossils from the Cambrian era.
D)  A trip to the arid Dead Sea region,where your historian colleagues have found a storeroom of wax-sealed jars.E) B) and D)
F) A) and D)

Question 13

Interrupting the night with a flash of light can trigger flowering in a long-day plant.Why doesn't introducing a short period of darkness during the day cause a short-day plant to flower?

Accepted Answer

A)  Sunlight contains enough far-red light to inhibit phytochrome induction of flowering.
B)  A brief dark period is not sufficient to trigger flowering.
C)  Phytochrome is only active in the dark.
D)  The circadian clock is less responsive during the day than at night.
E)  The phytochrome response also requires cool nighttime temperatures.F) A) and B)
G) A) and E)

Question 14

Early seed plants were pollinated by ________,as are present-day conifers.

Accepted Answer

A)  beetles
B)  bees
C)  trilobites
D)  wind
E)  waterF) A) and D)
G) B) and E)

Question 15

One way to improve crop productivity is to modify flowering time.This can allow for multiple growing seasons in one year,and can also increase grain production because a smaller plant has lower resource needs.You are approached by an agricultural company that wants to create an early-flowering transgenic plant.Using your knowledge of Arabidopsis genetics,which genetic modifications would you suggest?

Accepted Answer

A)  Inhibition of the embryonic flower (EMF) gene or overexpression of the LEAFY (LFY) gene would work.
B)  Inhibition of the LEAFY (LFY) gene or overexpression of the embryonic flower (emf) gene would work.
C)  Inhibition of either the embryonic flower (emf) gene or the LEAFY (LFY) gene would work.
D)  Early flowering is not possible in Arabidopsis,and is not likely to be possible in other plants.E) All of the above
F) C) and D)

Question 16

Place these statements in their proper sequence.
Walking through the botanical garden with a friend,you spy a rare and beautiful variety of Hosta."Oh I would love to have one of those!" you exclaim."But they cost a king's ransom." Your friend smiles,snips off a tiny piece of the shoot,and says,"I'll grow you one.I'll just take it back to lab and...
1.use enzymes to break down the cell walls..."
2.grow up a callus..."
3.wait for somatic embryos to form..."
4.culture an individual plantlet for you..."

Accepted Answer

The answer of Place these statements in their proper sequence.
Walking...

Question 17

If a pollen grain fails to generate two sperm cells,what is the most likely result of pollination?

Accepted Answer

A)  Half the seeds would develop fine,but the other half would die.
B)  The resulting progeny would be haploid.
C)  The seeds would lack either embryos or endosperm,and so would be nonviable.
D)  The endosperm would be smaller.E) B) and C)
F) B) and D)

Question 18

"Germination" can refer to two different events

Accepted Answer

A)  the arrival of the pollen grain at the ovule,and the growth of the seedling from the seed.
B)  the development of the flower,and the growth of the seedling from the seed.
C)  the growth of the pollen tube into the embryo sac,and the growth of the seedling from the seed.
D)  the development of the fruit from the ovary,and the growth of the seedling from the seed.E) A) and B)
F) C) and D)

Question 19

Which of these characteristics does not promote outcrossing in flowering plants?

Accepted Answer

A)  self-incompatibility
B)  dioecism
C)  monoecism
D)  physical separation of flower parts
E)  apomixisF) B) and D)
G) A) and C)

Question 20

Oaks,birches and corn produce both staminate and pistillate flowers on the same plant.What term describes this type of plant?

Accepted Answer

A)  monoecious
B)  dioecious
C)  hermaphroditic
D)  complete
E)  determinantF) D) and E)
G) C) and E)

Exam 40: Plant Reproduction

"Germination" can refer to two different events

Correct Answer
verified

Correct Answer
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Germination requires the use of metabolic reserves in the seed.Which of these compartments contains starch used to fuel early seedling growth?

Correct Answer
verified

Correct Answer
verified

Which tissue can not divide to give rise to identical progeny in a plant that reproduces asexually?

Correct Answer
verified

If a pollen grain fails to generate two sperm cells,what is the most likely result of pollination?

Correct Answer
verified

Which of the following statements about the angiosperm embryo sac is FALSE?

Correct Answer
verified

What are the "seed leaves" that grow from bulges on the embryo called?

Correct Answer
verified

Endosperm tissue of angiosperms has what ploidy level?

Correct Answer
verified

Correct Answer
verified

Scientists have confirmed by carbon dating that seeds dormant for up to 2000 years can successfully germinate.Based on the requirements for germination,what research expedition should you join in order to retrieve some ancient but viable seeds?

Correct Answer
verified

Interrupting the night with a flash of light can trigger flowering in a long-day plant.Why doesn't introducing a short period of darkness during the day cause a short-day plant to flower?

Correct Answer
verified

Oaks,birches and corn produce both staminate and pistillate flowers on the same plant.What term describes this type of plant?

Correct Answer
verified

Which of these characteristics does not promote outcrossing in flowering plants?

Correct Answer
verified

Early seed plants were pollinated by ________,as are present-day conifers.

Correct Answer
verified

Correct Answer
verified

A researcher is investigating the morphology of complete flowers.Which of the following organs must his flowers contain?

Correct Answer
verified

The developmental transition during which plants become able to respond to external and/or internal signals that promote flowering is known as

Correct Answer
verified

How could you monitor flower determination in a plant that is mutant for all three class E SEP genes?

Correct Answer
verified

Dandelions develop seeds by apomixis.What benefits does this strategy provide over vegetative or sexual reproduction?

Correct Answer
verified

Exam 40: Plant Reproduction

"Germination" can refer to two different events

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Germination requires the use of metabolic reserves in the seed.Which of these compartments contains starch used to fuel early seedling growth?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which tissue can not divide to give rise to identical progeny in a plant that reproduces asexually?

Correct AnswerverifiedShow Answer

If a pollen grain fails to generate two sperm cells,what is the most likely result of pollination?

Correct AnswerverifiedShow Answer

Which of the following statements about the angiosperm embryo sac is FALSE?

Correct AnswerverifiedShow Answer

What are the "seed leaves" that grow from bulges on the embryo called?

Correct AnswerverifiedShow Answer

Endosperm tissue of angiosperms has what ploidy level?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Scientists have confirmed by carbon dating that seeds dormant for up to 2000 years can successfully germinate.Based on the requirements for germination,what research expedition should you join in order to retrieve some ancient but viable seeds?

Correct AnswerverifiedShow Answer

Interrupting the night with a flash of light can trigger flowering in a long-day plant.Why doesn't introducing a short period of darkness during the day cause a short-day plant to flower?

Correct AnswerverifiedShow Answer

Oaks,birches and corn produce both staminate and pistillate flowers on the same plant.What term describes this type of plant?

Correct AnswerverifiedShow Answer

Which of these characteristics does not promote outcrossing in flowering plants?

Correct AnswerverifiedShow Answer

Early seed plants were pollinated by ________,as are present-day conifers.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A researcher is investigating the morphology of complete flowers.Which of the following organs must his flowers contain?

Correct AnswerverifiedShow Answer

The developmental transition during which plants become able to respond to external and/or internal signals that promote flowering is known as

Correct AnswerverifiedShow Answer

How could you monitor flower determination in a plant that is mutant for all three class E SEP genes?

Correct AnswerverifiedShow Answer

Dandelions develop seeds by apomixis.What benefits does this strategy provide over vegetative or sexual reproduction?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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